Finding the Fourth Proportional to 1,168.70, 1,612.94 and 696.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,168.70 : 1,612.94 = 696.72 : x
2. Step 2: Convert to fraction form
   1,168.70/1,612.94 = 696.72/x
3. Step 3: Cross multiply
   1,168.70x = 1,612.94 × 696.72
4. Step 4: Simplify right side
   1,168.70x = 1,123,767.56
5. Step 5: Solve for x
   x = 1,123,767.56/1,168.70
6. Step 6: Final answer
   x = 961.55