Finding the Fourth Proportional to 663,759.50, 915,728.22 and 408,667.82

Step by Step Solution

1. Step 1: Write the proportion equation
   663,759.50 : 915,728.22 = 408,667.82 : x
2. Step 2: Convert to fraction form
   663,759.50/915,728.22 = 408,667.82/x
3. Step 3: Cross multiply
   663,759.50x = 915,728.22 × 408,667.82
4. Step 4: Simplify right side
   663,759.50x = 374,228,650,801.24
5. Step 5: Solve for x
   x = 374,228,650,801.24/663,759.50
6. Step 6: Final answer
   x = 563,801.58