Cullumber Communication Corp. is considering an investment in new technologies. The company's management expects significant benefits in the first three years after installation, and smaller constant benefits in each of the next four years.

Year

Cash Flow

$1$

$2$

$3$

$4-7$

$-$$$9,750,700$

$$2\mathrm{.}092,000$

$$4,337,000$

$$3\mathrm{.}805,100$

$$1,435,500$

What is the discounted payback period for the project assuming a discount rate of $10$ percent?