Finding the Fourth Proportional to 806,397.30, 1,112,828.39 and 438,875.82

Step by Step Solution

1. Step 1: Write the proportion equation
   806,397.30 : 1,112,828.39 = 438,875.82 : x
2. Step 2: Convert to fraction form
   806,397.30/1,112,828.39 = 438,875.82/x
3. Step 3: Cross multiply
   806,397.30x = 1,112,828.39 × 438,875.82
4. Step 4: Simplify right side
   806,397.30x = 488,393,469,986.15
5. Step 5: Solve for x
   x = 488,393,469,986.15/806,397.30
6. Step 6: Final answer
   x = 605,648.69