Finding the Fourth Proportional to 2,288.52, 3,158.10 and 1,615.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.52 : 3,158.10 = 1,615.61 : x
2. Step 2: Convert to fraction form
   2,288.52/3,158.10 = 1,615.61/x
3. Step 3: Cross multiply
   2,288.52x = 3,158.10 × 1,615.61
4. Step 4: Simplify right side
   2,288.52x = 5,102,265.84
5. Step 5: Solve for x
   x = 5,102,265.84/2,288.52
6. Step 6: Final answer
   x = 2,229.50