Finding the Fourth Proportional to 789,510.96, 1,089,500.55 and 445,341.74

Step by Step Solution

1. Step 1: Write the proportion equation
   789,510.96 : 1,089,500.55 = 445,341.74 : x
2. Step 2: Convert to fraction form
   789,510.96/1,089,500.55 = 445,341.74/x
3. Step 3: Cross multiply
   789,510.96x = 1,089,500.55 × 445,341.74
4. Step 4: Simplify right side
   789,510.96x = 485,200,073,391.71
5. Step 5: Solve for x
   x = 485,200,073,391.71/789,510.96
6. Step 6: Final answer
   x = 614,557.74