Finding the Fourth Proportional to 765,875.37, 1,057,049.72 and 443,585.37

Step by Step Solution

1. Step 1: Write the proportion equation
   765,875.37 : 1,057,049.72 = 443,585.37 : x
2. Step 2: Convert to fraction form
   765,875.37/1,057,049.72 = 443,585.37/x
3. Step 3: Cross multiply
   765,875.37x = 1,057,049.72 × 443,585.37
4. Step 4: Simplify right side
   765,875.37x = 468,891,783,651.42
5. Step 5: Solve for x
   x = 468,891,783,651.42/765,875.37
6. Step 6: Final answer
   x = 612,229.88