Finding the Fourth Proportional to 755,839.72, 1,043,019.42 and 469,353.64

Step by Step Solution

1. Step 1: Write the proportion equation
   755,839.72 : 1,043,019.42 = 469,353.64 : x
2. Step 2: Convert to fraction form
   755,839.72/1,043,019.42 = 469,353.64/x
3. Step 3: Cross multiply
   755,839.72x = 1,043,019.42 × 469,353.64
4. Step 4: Simplify right side
   755,839.72x = 489,544,961,367.69
5. Step 5: Solve for x
   x = 489,544,961,367.69/755,839.72
6. Step 6: Final answer
   x = 647,683.56