Finding the Fourth Proportional to 1,151,711.78, 1,727,567.33 and 618,499.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151,711.78 : 1,727,567.33 = 618,499.31 : x
2. Step 2: Convert to fraction form
   1,151,711.78/1,727,567.33 = 618,499.31/x
3. Step 3: Cross multiply
   1,151,711.78x = 1,727,567.33 × 618,499.31
4. Step 4: Simplify right side
   1,151,711.78x = 1,068,499,189,853.21
5. Step 5: Solve for x
   x = 1,068,499,189,853.21/1,151,711.78
6. Step 6: Final answer
   x = 927,748.78