Finding the Fourth Proportional to 1,298,759.47, 1,792,294.71 and 725,809.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,759.47 : 1,792,294.71 = 725,809.21 : x
2. Step 2: Convert to fraction form
   1,298,759.47/1,792,294.71 = 725,809.21/x
3. Step 3: Cross multiply
   1,298,759.47x = 1,792,294.71 × 725,809.21
4. Step 4: Simplify right side
   1,298,759.47x = 1,300,864,007,552.28
5. Step 5: Solve for x
   x = 1,300,864,007,552.28/1,298,759.47
6. Step 6: Final answer
   x = 1,001,620.42