Finding the Fourth Proportional to 1,171.27, 1,616.39 and 699.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.27 : 1,616.39 = 699.04 : x
2. Step 2: Convert to fraction form
   1,171.27/1,616.39 = 699.04/x
3. Step 3: Cross multiply
   1,171.27x = 1,616.39 × 699.04
4. Step 4: Simplify right side
   1,171.27x = 1,129,921.27
5. Step 5: Solve for x
   x = 1,129,921.27/1,171.27
6. Step 6: Final answer
   x = 964.70