Finding the Fourth Proportional to 1,222.50, 1,687.14 and 757.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.50 : 1,687.14 = 757.02 : x
2. Step 2: Convert to fraction form
   1,222.50/1,687.14 = 757.02/x
3. Step 3: Cross multiply
   1,222.50x = 1,687.14 × 757.02
4. Step 4: Simplify right side
   1,222.50x = 1,277,198.72
5. Step 5: Solve for x
   x = 1,277,198.72/1,222.50
6. Step 6: Final answer
   x = 1,044.74