How do I calculate/solve for an adjustment factor?

Period	Year	Month	Occupancy	Nave Forcast	3 Mo.	6 Mo.	9 Mo.	Adjustment Factor
1	1989	Jan	1697	1697
2	1989	Feb	1701	1697
3	1989	Mar	2838	1701
4	1989	Apr	4182	2838	2078.67
5	1989	May	4756	4182	2907.00
6	1989	Jun	5001	4756	3925.33
7	1989	Jul	5492	5001	4646.33	3362.5
8	1989	Aug	5598	5492	5083.00	3995
9	1989	Sep	4707	5598	5363.67	4644.5
10	1989	Oct	4207	4707	5265.67	4956	3996.89
11	1989	Nov	3424	4207	4837.33	4960.167	4275.78
12	1989	Dec	2372	3424	4112.67	4738.167	4467.22
13	1990	Jan	2636	2372	3334.33	4300	4415.44
14	1990	Feb	1468	2636	2810.67	3824	4243.67
15	1990	Mar	3090	1468	2158.67	3135.667	3878.33
16	1990	Apr	3195	3090	2398.00	2866.167	3666.00
17	1990	May	5191	3195	2584.33	2697.5	3410.78
18	1990	Jun	4722	5191	3825.33	2992	3365.56
19	1990	Jul	5059	4722	4369.33	3383.667	3367.22
20	1990	Aug	5188	5059	4990.67	3787.5	3461.89
21	1990	Sep	4732	5188	4989.67	4407.5	3657.89
22	1990	Oct	3874	4732	4993.00	4681.167	3920.11
23	1990	Nov	3203	3874	4598.00	4794.333	4057.67
24	1990	Dec	1685	3203	3936.33	4463	4250.44
25	1991	Jan	2211	1685	2920.67	3956.833	4094.33
26	1991	Feb	1076	2211	2366.33	3482.167	3985.00
27	1991	Mar	2295	1076	1657.33	2796.833	3527.78
28	1991	Apr	2907	2295	1860.67	2390.667	3258.11
29	1991	May	4168	2907	2092.67	2229.5	3019.00
30	1991	Jun	3479	4168	3123.33	2390.333	2905.67
31	1991	Jul	4425	3479	3518.00	2689.333	2766.44
32	1991	Aug	4633	4425	4024.00	3058.333	2827.67
33	1991	Sep	2976	4633	4179.00	3651.167	2986.56
34	1991	Oct	2974	2976	4011.33	3764.667	3130.00
35	1991	Nov	2148	2974	3527.67	3775.833	3214.78
36	1991	Dec	873	2148	2699.33	3439.167	3333.89
37	1992	Jan	2299	873	1998.33	3004.833	3175.89
38	1992	Feb	1554	2299	1773.33	2650.5	3108.33
39	1992	Mar	1635	1554	1575.33	2137.333	2817.89
40	1992	Apr	2660	1635	1829.33	1913.833	2613.00
41	1992	May	3906	2660	1949.67	1861.5	2416.89
42	1992	Jun	4016	3906	2733.67	2154.5	2336.11
43	1992	Jul	5631	4016	3527.33	2678.333	2451.67
44	1992	Aug	4400	5631	4517.67	3233.667	2746.89
45	1992	Sep	3801	4400	4682.33	3708	2997.11
46	1992	Oct	2571	3801	4610.67	4069	3322.44
47	1992	Nov	1886	2571	3590.67	4054.167	3352.67
48	1992	Dec	1139	1886	2752.67	3717.5	3389.56
49	1993	Jan	1674	1139	1865.33	3238	3334.44
50	1993	Feb	738	1674	1566.33	2578.5	3224.89
51	1993	Mar	2666	738	1183.67	1968.167	2872.89
52	1993	Apr	1836	2666	1692.67	1779	2722.89
53	1993	May	3645	1836	1746.67	1656.5	2301.22
54	1993	Jun	3802	3645	2715.67	1949.667	2217.33
55	1993	Jul	5628	3802	3094.33	2393.5	2217.44
56	1993	Aug	5170	5628	4358.33	3052.5	2557.11
57	1993	Sep	4307	5170	4866.67	3791.167	2922.00
58	1993	Oct	2746	4307	5035.00	4064.667	3274.00
59	1993	Nov	2256	2746	4074.33	4216.333	3393.11
60	1993	Dec	1250	2256	3103.00	3984.833	3561.78
61	1994	Jan	916	1250	2084.00	3559.5	3404.44
62	1994	Feb	1057	916	1474.00	2774.167	3302.22
63	1994	Mar	2512	1057	1074.33	2088.667	3014.67
64	1994	Apr	2576	2512	1495.00	1789.5	2871.33
65	1994	May	3608	2576	2048.33	1761.167	2532.22
66	1994	Jun	3906	3608	2898.67	1986.5	2358.67
67	1994	Jul	5786	3906	3363.33	2429.167	2314.11
68	1994	Aug	4890	5786	4433.33	3240.833	2651.89
69	1994	Sep	4179	4890	4860.67	3879.667	2944.56
70	1994	Oct	2777	4179	4951.67	4157.5	3270.00
71	1994	Nov	2359	2777	3948.67	4191	3476.78
72	1994	Dec	1521	2359	3105.00	3982.833	3621.44
73	1995	Jan	1629	1521	2219.00	3585.333	3511.33
74	1995	Feb	1249	1629	1836.33	2892.5	3406.11
75	1995	Mar	2054	1249	1466.33	2285.667	3144.00
76	1995	Apr	2589	2054	1644.00	1931.5	2938.22
77	1995	May	3790	2589	1964.00	1900.167	2583.00
78	1995	Jun	3793	3790	2811.00	2138.667	2460.78
79	1995	Jul	6074	3793	3390.67	2517.333	2417.89
80	1995	Aug	4905	6074	4552.33	3258.167	2784.22