Finding the Fourth Proportional to 3,900.89, 5,382.94 and 2,222.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.89 : 5,382.94 = 2,222.24 : x
2. Step 2: Convert to fraction form
   3,900.89/5,382.94 = 2,222.24/x
3. Step 3: Cross multiply
   3,900.89x = 5,382.94 × 2,222.24
4. Step 4: Simplify right side
   3,900.89x = 11,962,184.59
5. Step 5: Solve for x
   x = 11,962,184.59/3,900.89
6. Step 6: Final answer
   x = 3,066.53