Finding the Fourth Proportional to 3,785.56, 5,222.55 and 2,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785.56 : 5,222.55 = 2,387.50 : x
2. Step 2: Convert to fraction form
   3,785.56/5,222.55 = 2,387.50/x
3. Step 3: Cross multiply
   3,785.56x = 5,222.55 × 2,387.50
4. Step 4: Simplify right side
   3,785.56x = 12,468,838.13
5. Step 5: Solve for x
   x = 12,468,838.13/3,785.56
6. Step 6: Final answer
   x = 3,293.79