Finding the Fourth Proportional to 913,839.82, 1,370,915.31 and 458,648.12

Step by Step Solution

1. Step 1: Write the proportion equation
   913,839.82 : 1,370,915.31 = 458,648.12 : x
2. Step 2: Convert to fraction form
   913,839.82/1,370,915.31 = 458,648.12/x
3. Step 3: Cross multiply
   913,839.82x = 1,370,915.31 × 458,648.12
4. Step 4: Simplify right side
   913,839.82x = 628,767,729,610.72
5. Step 5: Solve for x
   x = 628,767,729,610.72/913,839.82
6. Step 6: Final answer
   x = 688,050.26