Finding the Fourth Proportional to 2,490.09, 3,436.30 and 1,371.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.09 : 3,436.30 = 1,371.02 : x
2. Step 2: Convert to fraction form
   2,490.09/3,436.30 = 1,371.02/x
3. Step 3: Cross multiply
   2,490.09x = 3,436.30 × 1,371.02
4. Step 4: Simplify right side
   2,490.09x = 4,711,236.03
5. Step 5: Solve for x
   x = 4,711,236.03/2,490.09
6. Step 6: Final answer
   x = 1,891.99