Finding the Fourth Proportional to 723,086.10, 1,085,795.55 and 545,793.30

Step by Step Solution

1. Step 1: Write the proportion equation
   723,086.10 : 1,085,795.55 = 545,793.30 : x
2. Step 2: Convert to fraction form
   723,086.10/1,085,795.55 = 545,793.30/x
3. Step 3: Cross multiply
   723,086.10x = 1,085,795.55 × 545,793.30
4. Step 4: Simplify right side
   723,086.10x = 592,619,936,359.82
5. Step 5: Solve for x
   x = 592,619,936,359.82/723,086.10
6. Step 6: Final answer
   x = 819,570.36