I get the first stage dividends, I dont get the math behind the second stage. Primarily where does .67 come from. And why do we do 1/(1/1)^3

Example Phoenix produces dividends in three consecutive years of 0,0.31, and 0.65 , respectively. Since year 3 , the dividend grows at 4% in perpetuity. Given a discount rate of 10%, what is the price of the stock? PV=(1+.1)10+(1+.1)2.31+(1+.1)3.65+[(1+.1)31(.10.04).67]