Finding the Fourth Proportional to 2,144.12, 3,216.78 and 1,757.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.12 : 3,216.78 = 1,757.75 : x
2. Step 2: Convert to fraction form
   2,144.12/3,216.78 = 1,757.75/x
3. Step 3: Cross multiply
   2,144.12x = 3,216.78 × 1,757.75
4. Step 4: Simplify right side
   2,144.12x = 5,654,278.96
5. Step 5: Solve for x
   x = 5,654,278.96/2,144.12
6. Step 6: Final answer
   x = 2,637.12