Finding the Fourth Proportional to 1,229,363.82, 1,696,542.98 and 678,142.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229,363.82 : 1,696,542.98 = 678,142.80 : x
2. Step 2: Convert to fraction form
   1,229,363.82/1,696,542.98 = 678,142.80/x
3. Step 3: Cross multiply
   1,229,363.82x = 1,696,542.98 × 678,142.80
4. Step 4: Simplify right side
   1,229,363.82x = 1,150,498,403,386.83
5. Step 5: Solve for x
   x = 1,150,498,403,386.83/1,229,363.82
6. Step 6: Final answer
   x = 935,848.59