Finding the Fourth Proportional to 2,618.98, 3,614.06 and 1,439.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.98 : 3,614.06 = 1,439.83 : x
2. Step 2: Convert to fraction form
   2,618.98/3,614.06 = 1,439.83/x
3. Step 3: Cross multiply
   2,618.98x = 3,614.06 × 1,439.83
4. Step 4: Simplify right side
   2,618.98x = 5,203,606.74
5. Step 5: Solve for x
   x = 5,203,606.74/2,618.98
6. Step 6: Final answer
   x = 1,986.88