Finding the Fourth Proportional to 2,490.05, 3,436.35 and 1,371.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.05 : 3,436.35 = 1,371.11 : x
2. Step 2: Convert to fraction form
   2,490.05/3,436.35 = 1,371.11/x
3. Step 3: Cross multiply
   2,490.05x = 3,436.35 × 1,371.11
4. Step 4: Simplify right side
   2,490.05x = 4,711,596.67
5. Step 5: Solve for x
   x = 4,711,596.67/2,490.05
6. Step 6: Final answer
   x = 1,892.17