Finding the Fourth Proportional to 1,171.42, 1,617.42 and 729.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.42 : 1,617.42 = 729.52 : x
2. Step 2: Convert to fraction form
   1,171.42/1,617.42 = 729.52/x
3. Step 3: Cross multiply
   1,171.42x = 1,617.42 × 729.52
4. Step 4: Simplify right side
   1,171.42x = 1,179,938.93
5. Step 5: Solve for x
   x = 1,179,938.93/1,171.42
6. Step 6: Final answer
   x = 1,007.27