Finding the Fourth Proportional to 2,144.48, 3,216.60 and 1,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.48 : 3,216.60 = 1,255.50 : x
2. Step 2: Convert to fraction form
   2,144.48/3,216.60 = 1,255.50/x
3. Step 3: Cross multiply
   2,144.48x = 3,216.60 × 1,255.50
4. Step 4: Simplify right side
   2,144.48x = 4,038,441.30
5. Step 5: Solve for x
   x = 4,038,441.30/2,144.48
6. Step 6: Final answer
   x = 1,883.18