Finding the Fourth Proportional to 1,172.38, 1,617.61 and 700.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172.38 : 1,617.61 = 700.18 : x
2. Step 2: Convert to fraction form
   1,172.38/1,617.61 = 700.18/x
3. Step 3: Cross multiply
   1,172.38x = 1,617.61 × 700.18
4. Step 4: Simplify right side
   1,172.38x = 1,132,614.67
5. Step 5: Solve for x
   x = 1,132,614.67/1,172.38
6. Step 6: Final answer
   x = 966.09