Finding the Fourth Proportional to 1,434,146.52, 1,979,046.99 and 789,440.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,146.52 : 1,979,046.99 = 789,440.79 : x
2. Step 2: Convert to fraction form
   1,434,146.52/1,979,046.99 = 789,440.79/x
3. Step 3: Cross multiply
   1,434,146.52x = 1,979,046.99 × 789,440.79
4. Step 4: Simplify right side
   1,434,146.52x = 1,562,340,419,232.72
5. Step 5: Solve for x
   x = 1,562,340,419,232.72/1,434,146.52
6. Step 6: Final answer
   x = 1,089,386.89