Finding the Fourth Proportional to 2,508.57, 3,762.45 and 864.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,508.57 : 3,762.45 = 864.27 : x
2. Step 2: Convert to fraction form
   2,508.57/3,762.45 = 864.27/x
3. Step 3: Cross multiply
   2,508.57x = 3,762.45 × 864.27
4. Step 4: Simplify right side
   2,508.57x = 3,251,772.66
5. Step 5: Solve for x
   x = 3,251,772.66/2,508.57
6. Step 6: Final answer
   x = 1,296.27