Finding the Fourth Proportional to 2,490.57, 3,437.60 and 1,443.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.57 : 3,437.60 = 1,443.24 : x
2. Step 2: Convert to fraction form
   2,490.57/3,437.60 = 1,443.24/x
3. Step 3: Cross multiply
   2,490.57x = 3,437.60 × 1,443.24
4. Step 4: Simplify right side
   2,490.57x = 4,961,274.61
5. Step 5: Solve for x
   x = 4,961,274.61/2,490.57
6. Step 6: Final answer
   x = 1,992.02