Finding the Fourth Proportional to 2,439.89, 3,367.17 and 1,363.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.89 : 3,367.17 = 1,363.31 : x
2. Step 2: Convert to fraction form
   2,439.89/3,367.17 = 1,363.31/x
3. Step 3: Cross multiply
   2,439.89x = 3,367.17 × 1,363.31
4. Step 4: Simplify right side
   2,439.89x = 4,590,479.70
5. Step 5: Solve for x
   x = 4,590,479.70/2,439.89
6. Step 6: Final answer
   x = 1,881.43