Finding the Fourth Proportional to 2,383.41, 3,288.49 and 1,439.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.41 : 3,288.49 = 1,439.74 : x
2. Step 2: Convert to fraction form
   2,383.41/3,288.49 = 1,439.74/x
3. Step 3: Cross multiply
   2,383.41x = 3,288.49 × 1,439.74
4. Step 4: Simplify right side
   2,383.41x = 4,734,570.59
5. Step 5: Solve for x
   x = 4,734,570.59/2,383.41
6. Step 6: Final answer
   x = 1,986.47