Finding the Fourth Proportional to 728,538.72, 1,092,939.60 and 329,367.48

Step by Step Solution

1. Step 1: Write the proportion equation
   728,538.72 : 1,092,939.60 = 329,367.48 : x
2. Step 2: Convert to fraction form
   728,538.72/1,092,939.60 = 329,367.48/x
3. Step 3: Cross multiply
   728,538.72x = 1,092,939.60 × 329,367.48
4. Step 4: Simplify right side
   728,538.72x = 359,978,761,844.21
5. Step 5: Solve for x
   x = 359,978,761,844.21/728,538.72
6. Step 6: Final answer
   x = 494,110.68