Finding the Fourth Proportional to 2,508.35, 3,761.16 and 863.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.35 : 3,761.16 = 863.55 : x
2. Step 2: Convert to fraction form
   2,508.35/3,761.16 = 863.55/x
3. Step 3: Cross multiply
   2,508.35x = 3,761.16 × 863.55
4. Step 4: Simplify right side
   2,508.35x = 3,247,949.72
5. Step 5: Solve for x
   x = 3,247,949.72/2,508.35
6. Step 6: Final answer
   x = 1,294.86