Finding the Fourth Proportional to 2,384.29, 3,289.18 and 1,440.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,384.29 : 3,289.18 = 1,440.12 : x
2. Step 2: Convert to fraction form
   2,384.29/3,289.18 = 1,440.12/x
3. Step 3: Cross multiply
   2,384.29x = 3,289.18 × 1,440.12
4. Step 4: Simplify right side
   2,384.29x = 4,736,813.90
5. Step 5: Solve for x
   x = 4,736,813.90/2,384.29
6. Step 6: Final answer
   x = 1,986.68