Finding the Fourth Proportional to 1,434,387.91, 1,979,498.86 and 789,831.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,387.91 : 1,979,498.86 = 789,831.16 : x
2. Step 2: Convert to fraction form
   1,434,387.91/1,979,498.86 = 789,831.16/x
3. Step 3: Cross multiply
   1,434,387.91x = 1,979,498.86 × 789,831.16
4. Step 4: Simplify right side
   1,434,387.91x = 1,563,469,880,812.48
5. Step 5: Solve for x
   x = 1,563,469,880,812.48/1,434,387.91
6. Step 6: Final answer
   x = 1,089,990.98