Finding the Fourth Proportional to 963.43, 1,443.76 and 475.91

Step by Step Solution

1. Step 1: Write the proportion equation
   963.43 : 1,443.76 = 475.91 : x
2. Step 2: Convert to fraction form
   963.43/1,443.76 = 475.91/x
3. Step 3: Cross multiply
   963.43x = 1,443.76 × 475.91
4. Step 4: Simplify right side
   963.43x = 687,096.83
5. Step 5: Solve for x
   x = 687,096.83/963.43
6. Step 6: Final answer
   x = 713.18