Finding the Fourth Proportional to 2,238.76, 3,086.72 and 1,440.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.76 : 3,086.72 = 1,440.73 : x
2. Step 2: Convert to fraction form
   2,238.76/3,086.72 = 1,440.73/x
3. Step 3: Cross multiply
   2,238.76x = 3,086.72 × 1,440.73
4. Step 4: Simplify right side
   2,238.76x = 4,447,122.90
5. Step 5: Solve for x
   x = 4,447,122.90/2,238.76
6. Step 6: Final answer
   x = 1,986.42