Finding the Fourth Proportional to 684,978.56, 1,023,267.60 and 493,807.42

Step by Step Solution

1. Step 1: Write the proportion equation
   684,978.56 : 1,023,267.60 = 493,807.42 : x
2. Step 2: Convert to fraction form
   684,978.56/1,023,267.60 = 493,807.42/x
3. Step 3: Cross multiply
   684,978.56x = 1,023,267.60 × 493,807.42
4. Step 4: Simplify right side
   684,978.56x = 505,297,131,056.56
5. Step 5: Solve for x
   x = 505,297,131,056.56/684,978.56
6. Step 6: Final answer
   x = 737,683.13