Finding the Fourth Proportional to 3,822.72, 5,275.50 and 2,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,822.72 : 5,275.50 = 2,144.50 : x
2. Step 2: Convert to fraction form
   3,822.72/5,275.50 = 2,144.50/x
3. Step 3: Cross multiply
   3,822.72x = 5,275.50 × 2,144.50
4. Step 4: Simplify right side
   3,822.72x = 11,313,309.75
5. Step 5: Solve for x
   x = 11,313,309.75/3,822.72
6. Step 6: Final answer
   x = 2,959.49