Finding the Fourth Proportional to 1,130.72, 1,560.15 and 633.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,130.72 : 1,560.15 = 633.29 : x
2. Step 2: Convert to fraction form
   1,130.72/1,560.15 = 633.29/x
3. Step 3: Cross multiply
   1,130.72x = 1,560.15 × 633.29
4. Step 4: Simplify right side
   1,130.72x = 988,019.59
5. Step 5: Solve for x
   x = 988,019.59/1,130.72
6. Step 6: Final answer
   x = 873.80