Finding the Fourth Proportional to 1,155,139.49, 1,729,162.24 and 726,669.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,139.49 : 1,729,162.24 = 726,669.14 : x
2. Step 2: Convert to fraction form
   1,155,139.49/1,729,162.24 = 726,669.14/x
3. Step 3: Cross multiply
   1,155,139.49x = 1,729,162.24 × 726,669.14
4. Step 4: Simplify right side
   1,155,139.49x = 1,256,528,827,398.79
5. Step 5: Solve for x
   x = 1,256,528,827,398.79/1,155,139.49
6. Step 6: Final answer
   x = 1,087,772.37