I know im suppose to do something after that

can someone help me

A perpetuity makes payments at the end of each year at an annual effective rate of 3.4%. The payment pattern is 3,2,1 (at the end of years 1,2 and 3 ) and this pattern repeats for the balance of the perpetuity. Calculate the present value of the perpetuity at the beginning of the 1 st year. Please show all work. PV:1+3.41)=2.90132=PV=3.4%5.676492=PV:(1+3.4%)22=1.87063