Finding the Fourth Proportional to 1,096.52, 1,513.22 and 630.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.52 : 1,513.22 = 630.80 : x
2. Step 2: Convert to fraction form
   1,096.52/1,513.22 = 630.80/x
3. Step 3: Cross multiply
   1,096.52x = 1,513.22 × 630.80
4. Step 4: Simplify right side
   1,096.52x = 954,539.18
5. Step 5: Solve for x
   x = 954,539.18/1,096.52
6. Step 6: Final answer
   x = 870.52