Finding the Fourth Proportional to 1,088.72, 1,502.52 and 696.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.72 : 1,502.52 = 696.08 : x
2. Step 2: Convert to fraction form
   1,088.72/1,502.52 = 696.08/x
3. Step 3: Cross multiply
   1,088.72x = 1,502.52 × 696.08
4. Step 4: Simplify right side
   1,088.72x = 1,045,874.12
5. Step 5: Solve for x
   x = 1,045,874.12/1,088.72
6. Step 6: Final answer
   x = 960.65