Finding the Fourth Proportional to 789,564.79, 1,089,585.84 and 445,401.46

Step by Step Solution

1. Step 1: Write the proportion equation
   789,564.79 : 1,089,585.84 = 445,401.46 : x
2. Step 2: Convert to fraction form
   789,564.79/1,089,585.84 = 445,401.46/x
3. Step 3: Cross multiply
   789,564.79x = 1,089,585.84 × 445,401.46
4. Step 4: Simplify right side
   789,564.79x = 485,303,123,931.33
5. Step 5: Solve for x
   x = 485,303,123,931.33/789,564.79
6. Step 6: Final answer
   x = 614,646.36