Finding the Fourth Proportional to 1,096.46, 1,513.12 and 630.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.46 : 1,513.12 = 630.71 : x
2. Step 2: Convert to fraction form
   1,096.46/1,513.12 = 630.71/x
3. Step 3: Cross multiply
   1,096.46x = 1,513.12 × 630.71
4. Step 4: Simplify right side
   1,096.46x = 954,339.92
5. Step 5: Solve for x
   x = 954,339.92/1,096.46
6. Step 6: Final answer
   x = 870.38