Finding the Fourth Proportional to 2,500.52, 3,751.42 and 857.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.52 : 3,751.42 = 857.16 : x
2. Step 2: Convert to fraction form
   2,500.52/3,751.42 = 857.16/x
3. Step 3: Cross multiply
   2,500.52x = 3,751.42 × 857.16
4. Step 4: Simplify right side
   2,500.52x = 3,215,567.17
5. Step 5: Solve for x
   x = 3,215,567.17/2,500.52
6. Step 6: Final answer
   x = 1,285.96