Finding the Fourth Proportional to 1,253,099.09, 1,729,278.72 and 680,139.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,099.09 : 1,729,278.72 = 680,139.52 : x
2. Step 2: Convert to fraction form
   1,253,099.09/1,729,278.72 = 680,139.52/x
3. Step 3: Cross multiply
   1,253,099.09x = 1,729,278.72 × 680,139.52
4. Step 4: Simplify right side
   1,253,099.09x = 1,176,150,794,243.82
5. Step 5: Solve for x
   x = 1,176,150,794,243.82/1,253,099.09
6. Step 6: Final answer
   x = 938,593.60