Finding the Fourth Proportional to 807,624.72, 1,114,507.20 and 445,082.16

Step by Step Solution

1. Step 1: Write the proportion equation
   807,624.72 : 1,114,507.20 = 445,082.16 : x
2. Step 2: Convert to fraction form
   807,624.72/1,114,507.20 = 445,082.16/x
3. Step 3: Cross multiply
   807,624.72x = 1,114,507.20 × 445,082.16
4. Step 4: Simplify right side
   807,624.72x = 496,047,271,911.55
5. Step 5: Solve for x
   x = 496,047,271,911.55/807,624.72
6. Step 6: Final answer
   x = 614,205.16