Finding the Fourth Proportional to 2,490.39, 3,436.74 and 1,371.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.39 : 3,436.74 = 1,371.33 : x
2. Step 2: Convert to fraction form
   2,490.39/3,436.74 = 1,371.33/x
3. Step 3: Cross multiply
   2,490.39x = 3,436.74 × 1,371.33
4. Step 4: Simplify right side
   2,490.39x = 4,712,899.82
5. Step 5: Solve for x
   x = 4,712,899.82/2,490.39
6. Step 6: Final answer
   x = 1,892.43