Finding the Fourth Proportional to 2,490.59, 3,436.94 and 1,371.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.59 : 3,436.94 = 1,371.50 : x
2. Step 2: Convert to fraction form
   2,490.59/3,436.94 = 1,371.50/x
3. Step 3: Cross multiply
   2,490.59x = 3,436.94 × 1,371.50
4. Step 4: Simplify right side
   2,490.59x = 4,713,759.95
5. Step 5: Solve for x
   x = 4,713,759.95/2,490.59
6. Step 6: Final answer
   x = 1,892.63