The IRR (internal rate of return) is between 18-20% . Part 5 Finally, determine the formula and calculate the profitability index. (Round your answer to two decimal places, X.XX.) Present value of net cash inflows Initial investment = Profitability index $2,374,075 $1,800,000 = 1.32 Part 6 Requirement 2. Recommend whether the company should invest in this project. Recommendation: Water Planet should shoud not invest in the project because the payback period is greater than less than the operating life, the NPV is negative positive , the profitability index is greater than less than one, and the ARR and IRR are greater than less than the company's required rate of return