For a price of $1040, Camille will sell you a share which just paid a dividend of $100, and is expected to pay dividends every year forever, growing at a rate of 5% pa.
So the next dividend will be 100(1+0.05)1=$105.00, and the year after it will be 100(1+0.05)2=110.25 and so on.
The required return of the stock is 15% pa.