Finding the Fourth Proportional to 743,644.56, 1,026,224.61 and 404,112.78

Step by Step Solution

1. Step 1: Write the proportion equation
   743,644.56 : 1,026,224.61 = 404,112.78 : x
2. Step 2: Convert to fraction form
   743,644.56/1,026,224.61 = 404,112.78/x
3. Step 3: Cross multiply
   743,644.56x = 1,026,224.61 × 404,112.78
4. Step 4: Simplify right side
   743,644.56x = 414,710,480,051.52
5. Step 5: Solve for x
   x = 414,710,480,051.52/743,644.56
6. Step 6: Final answer
   x = 557,672.98