Finding the Fourth Proportional to 927,560.16, 1,388,978.15 and 611,057.52

Step by Step Solution

1. Step 1: Write the proportion equation
   927,560.16 : 1,388,978.15 = 611,057.52 : x
2. Step 2: Convert to fraction form
   927,560.16/1,388,978.15 = 611,057.52/x
3. Step 3: Cross multiply
   927,560.16x = 1,388,978.15 × 611,057.52
4. Step 4: Simplify right side
   927,560.16x = 848,745,540,617.90
5. Step 5: Solve for x
   x = 848,745,540,617.90/927,560.16
6. Step 6: Final answer
   x = 915,030.18