Finding the Fourth Proportional to 1,092.72, 1,507.24 and 699.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.72 : 1,507.24 = 699.12 : x
2. Step 2: Convert to fraction form
   1,092.72/1,507.24 = 699.12/x
3. Step 3: Cross multiply
   1,092.72x = 1,507.24 × 699.12
4. Step 4: Simplify right side
   1,092.72x = 1,053,741.63
5. Step 5: Solve for x
   x = 1,053,741.63/1,092.72
6. Step 6: Final answer
   x = 964.33