Finding the Fourth Proportional to 615,086.10, 922,629.15 and 615,086.10

Step by Step Solution

1. Step 1: Write the proportion equation
   615,086.10 : 922,629.15 = 615,086.10 : x
2. Step 2: Convert to fraction form
   615,086.10/922,629.15 = 615,086.10/x
3. Step 3: Cross multiply
   615,086.10x = 922,629.15 × 615,086.10
4. Step 4: Simplify right side
   615,086.10x = 567,496,365,619.82
5. Step 5: Solve for x
   x = 567,496,365,619.82/615,086.10
6. Step 6: Final answer
   x = 922,629.15