Finding the Fourth Proportional to 1,356,654.09, 1,872,512.88 and 813,111.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356,654.09 : 1,872,512.88 = 813,111.69 : x
2. Step 2: Convert to fraction form
   1,356,654.09/1,872,512.88 = 813,111.69/x
3. Step 3: Cross multiply
   1,356,654.09x = 1,872,512.88 × 813,111.69
4. Step 4: Simplify right side
   1,356,654.09x = 1,522,562,112,403.57
5. Step 5: Solve for x
   x = 1,522,562,112,403.57/1,356,654.09
6. Step 6: Final answer
   x = 1,122,292.06