Finding the Fourth Proportional to 611,870.48, 843,913.32 and 536,287.76

Step by Step Solution

1. Step 1: Write the proportion equation
   611,870.48 : 843,913.32 = 536,287.76 : x
2. Step 2: Convert to fraction form
   611,870.48/843,913.32 = 536,287.76/x
3. Step 3: Cross multiply
   611,870.48x = 843,913.32 × 536,287.76
4. Step 4: Simplify right side
   611,870.48x = 452,580,384,016.96
5. Step 5: Solve for x
   x = 452,580,384,016.96/611,870.48
6. Step 6: Final answer
   x = 739,666.97