Finding the Fourth Proportional to 1,092.50, 1,506.24 and 718.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.50 : 1,506.24 = 718.82 : x
2. Step 2: Convert to fraction form
   1,092.50/1,506.24 = 718.82/x
3. Step 3: Cross multiply
   1,092.50x = 1,506.24 × 718.82
4. Step 4: Simplify right side
   1,092.50x = 1,082,715.44
5. Step 5: Solve for x
   x = 1,082,715.44/1,092.50
6. Step 6: Final answer
   x = 991.04