Finding the Fourth Proportional to 1,089.49, 1,502.94 and 696.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.49 : 1,502.94 = 696.10 : x
2. Step 2: Convert to fraction form
   1,089.49/1,502.94 = 696.10/x
3. Step 3: Cross multiply
   1,089.49x = 1,502.94 × 696.10
4. Step 4: Simplify right side
   1,089.49x = 1,046,196.53
5. Step 5: Solve for x
   x = 1,046,196.53/1,089.49
6. Step 6: Final answer
   x = 960.26