Finding the Fourth Proportional to 1,229.18, 1,696.71 and 757.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.18 : 1,696.71 = 757.15 : x
2. Step 2: Convert to fraction form
   1,229.18/1,696.71 = 757.15/x
3. Step 3: Cross multiply
   1,229.18x = 1,696.71 × 757.15
4. Step 4: Simplify right side
   1,229.18x = 1,284,662.57
5. Step 5: Solve for x
   x = 1,284,662.57/1,229.18
6. Step 6: Final answer
   x = 1,045.14