Finding the Fourth Proportional to 1,018.52, 1,527.82 and 441.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.52 : 1,527.82 = 441.42 : x
2. Step 2: Convert to fraction form
   1,018.52/1,527.82 = 441.42/x
3. Step 3: Cross multiply
   1,018.52x = 1,527.82 × 441.42
4. Step 4: Simplify right side
   1,018.52x = 674,410.30
5. Step 5: Solve for x
   x = 674,410.30/1,018.52
6. Step 6: Final answer
   x = 662.15