Answer:
 $4,238.05 Â
Explanation:
The computation of the present value is shown below:
Years  Cash flows  Discount factor @7%     Present value
1 Â Â Â Â Â $850.00 Â 0.9345794393 Â Â Â Â Â Â Â $794.39 Â
2 Â Â Â Â Â $1,190.00 Â 0.8734387283 Â Â Â Â Â Â Â $1,039.39 Â
3 Â Â Â Â Â $1,450.00 Â 0.8162978769 Â Â Â Â Â Â Â $1,183.63 Â
4 Â Â Â Â Â $1,600.00 Â 0.762895212 Â Â Â Â Â Â Â $1,220.63 Â
Total present value                $4,238.05 Â