Finding the Fourth Proportional to 743,810.43, 1,026,465.18 and 404,279.49

Step by Step Solution

1. Step 1: Write the proportion equation
   743,810.43 : 1,026,465.18 = 404,279.49 : x
2. Step 2: Convert to fraction form
   743,810.43/1,026,465.18 = 404,279.49/x
3. Step 3: Cross multiply
   743,810.43x = 1,026,465.18 × 404,279.49
4. Step 4: Simplify right side
   743,810.43x = 414,978,819,473.16
5. Step 5: Solve for x
   x = 414,978,819,473.16/743,810.43
6. Step 6: Final answer
   x = 557,909.38