Finding the Fourth Proportional to 789,156.16, 1,089,142.16 and 445,062.88

Step by Step Solution

1. Step 1: Write the proportion equation
   789,156.16 : 1,089,142.16 = 445,062.88 : x
2. Step 2: Convert to fraction form
   789,156.16/1,089,142.16 = 445,062.88/x
3. Step 3: Cross multiply
   789,156.16x = 1,089,142.16 × 445,062.88
4. Step 4: Simplify right side
   789,156.16x = 484,736,746,459.02
5. Step 5: Solve for x
   x = 484,736,746,459.02/789,156.16
6. Step 6: Final answer
   x = 614,246.93