Finding the Fourth Proportional to 2,144.16, 3,216.28 and 757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.16 : 3,216.28 = 757.50 : x
2. Step 2: Convert to fraction form
   2,144.16/3,216.28 = 757.50/x
3. Step 3: Cross multiply
   2,144.16x = 3,216.28 × 757.50
4. Step 4: Simplify right side
   2,144.16x = 2,436,332.10
5. Step 5: Solve for x
   x = 2,436,332.10/2,144.16
6. Step 6: Final answer
   x = 1,136.26