Finding the Fourth Proportional to 789,447.30, 1,089,436.50 and 426,870.29

Step by Step Solution

1. Step 1: Write the proportion equation
   789,447.30 : 1,089,436.50 = 426,870.29 : x
2. Step 2: Convert to fraction form
   789,447.30/1,089,436.50 = 426,870.29/x
3. Step 3: Cross multiply
   789,447.30x = 1,089,436.50 × 426,870.29
4. Step 4: Simplify right side
   789,447.30x = 465,048,074,691.59
5. Step 5: Solve for x
   x = 465,048,074,691.59/789,447.30
6. Step 6: Final answer
   x = 589,080.58