Consider the demand for some product over the last 12 periods. The data has been collected in the Microsoft Excel Online file below. Use the Microsoft Excel Online file below to develop the exponential smoothing forecast and answer the following questions. Assume the forecast for period 2 is 1,200 and period 3 is 1,640. Use a smoothing constant () value of 0.4.

Exponential Smoothing Forecast
Alpha ()	0.4
Period	Actual Demand	Forecast
1	1,200
2	2,300	1,200
3	2,100	1640
4	1,400
5	2,600
6	3,500
7	3,400
8	3,300
9	4,000
10	4,700
11	4,300
12	4,500
13

1. Calculate the forecast for the periods from 4 to 13 using the exponential smoothing method. Do not round intermediate calculations. Round your answers to the nearest whole number.

Period	Forecast
3	1640
4
5
6
7
8
9
10
11
12
13