Final answer:
The payback period for the project is 3.6 years, calculated by dividing the initial investment of $4,500,000 by the expected annual cash inflows of $1,250,000.
Step-by-step explanation:
To calculate the payback period for the described project, we must determine how many years it would take for the cash inflows to cover the initial investment of $4,500,000. With an annual cash inflow of $1,250,000, we can simply divide the initial outflow by the annual inflow:
Payback Period = Initial Investment / Annual Cash Inflow
= $4,500,000 / $1,250,000
= 3.6 years
Therefore, it would take 3.6 years for the company to recover its initial investment through the annual cash inflows. Given that the company requires a 12.75% return on investment, this payback period must be considered alongside other investment appraisal techniques to determine whether the project meets the company's return criteria.