Finding the Fourth Proportional to 2,507.52, 3,761.49 and 863.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,507.52 : 3,761.49 = 863.40 : x
2. Step 2: Convert to fraction form
   2,507.52/3,761.49 = 863.40/x
3. Step 3: Cross multiply
   2,507.52x = 3,761.49 × 863.40
4. Step 4: Simplify right side
   2,507.52x = 3,247,670.47
5. Step 5: Solve for x
   x = 3,247,670.47/2,507.52
6. Step 6: Final answer
   x = 1,295.17