Your project is tasked with the excavation of 1,000,000 cubic feet of soil. According to the project management plan you need to excavate 60,000 cubic feet of soil per week at a cost of $5 per cubic feet. According to the first month’s progress report, the project’s EV was 1,000,000 and the AC was 1,200,000. According to the second month’s progress report, the project’s EV was 2,200,000 and the AC was 4,400,000. After the 3rd month (12 weeks) you have 250,000 cubic feet of soil remaining to be excavated and your total cost to date is 4,000,000.

What is the cost performance index?