Finding the Fourth Proportional to 2,144.49, 3,216.69 and 757.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.49 : 3,216.69 = 757.82 : x
2. Step 2: Convert to fraction form
   2,144.49/3,216.69 = 757.82/x
3. Step 3: Cross multiply
   2,144.49x = 3,216.69 × 757.82
4. Step 4: Simplify right side
   2,144.49x = 2,437,655.93
5. Step 5: Solve for x
   x = 2,437,655.93/2,144.49
6. Step 6: Final answer
   x = 1,136.71