Finding the Fourth Proportional to 740,673.59, 1,022,150.54 and 418,397.27

Step by Step Solution

1. Step 1: Write the proportion equation
   740,673.59 : 1,022,150.54 = 418,397.27 : x
2. Step 2: Convert to fraction form
   740,673.59/1,022,150.54 = 418,397.27/x
3. Step 3: Cross multiply
   740,673.59x = 1,022,150.54 × 418,397.27
4. Step 4: Simplify right side
   740,673.59x = 427,664,991,400.27
5. Step 5: Solve for x
   x = 427,664,991,400.27/740,673.59
6. Step 6: Final answer
   x = 577,400.09