Finding the Fourth Proportional to 2,601.18, 3,900.47 and 1,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,601.18 : 3,900.47 = 1,490.42 : x
2. Step 2: Convert to fraction form
   2,601.18/3,900.47 = 1,490.42/x
3. Step 3: Cross multiply
   2,601.18x = 3,900.47 × 1,490.42
4. Step 4: Simplify right side
   2,601.18x = 5,813,311.54
5. Step 5: Solve for x
   x = 5,813,311.54/2,601.18
6. Step 6: Final answer
   x = 2,234.87