Finding the Fourth Proportional to 916,131.69, 1,264,263.22 and 508,233.55

Step by Step Solution

1. Step 1: Write the proportion equation
   916,131.69 : 1,264,263.22 = 508,233.55 : x
2. Step 2: Convert to fraction form
   916,131.69/1,264,263.22 = 508,233.55/x
3. Step 3: Cross multiply
   916,131.69x = 1,264,263.22 × 508,233.55
4. Step 4: Simplify right side
   916,131.69x = 642,540,980,003.79
5. Step 5: Solve for x
   x = 642,540,980,003.79/916,131.69
6. Step 6: Final answer
   x = 701,363.12