Finding the Fourth Proportional to 2,238.86, 3,089.15 and 1,440.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.86 : 3,089.15 = 1,440.92 : x
2. Step 2: Convert to fraction form
   2,238.86/3,089.15 = 1,440.92/x
3. Step 3: Cross multiply
   2,238.86x = 3,089.15 × 1,440.92
4. Step 4: Simplify right side
   2,238.86x = 4,451,232.04
5. Step 5: Solve for x
   x = 4,451,232.04/2,238.86
6. Step 6: Final answer
   x = 1,988.17