Finding the Fourth Proportional to 1,434,387.34, 1,979,498.06 and 789,830.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,387.34 : 1,979,498.06 = 789,830.60 : x
2. Step 2: Convert to fraction form
   1,434,387.34/1,979,498.06 = 789,830.60/x
3. Step 3: Cross multiply
   1,434,387.34x = 1,979,498.06 × 789,830.60
4. Step 4: Simplify right side
   1,434,387.34x = 1,563,468,133,986.65
5. Step 5: Solve for x
   x = 1,563,468,133,986.65/1,434,387.34
6. Step 6: Final answer
   x = 1,089,990.20