Finding the Fourth Proportional to 3,098.71, 4,277.89 and 2,389

Step by Step Solution

1. Step 1: Write the proportion equation
   3,098.71 : 4,277.89 = 2,389 : x
2. Step 2: Convert to fraction form
   3,098.71/4,277.89 = 2,389/x
3. Step 3: Cross multiply
   3,098.71x = 4,277.89 × 2,389
4. Step 4: Simplify right side
   3,098.71x = 10,219,867.27
5. Step 5: Solve for x
   x = 10,219,867.27/3,098.71
6. Step 6: Final answer
   x = 3,298.10