Finding the Fourth Proportional to 2,585.25, 3,879.50 and 1,490.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,585.25 : 3,879.50 = 1,490.13 : x
2. Step 2: Convert to fraction form
   2,585.25/3,879.50 = 1,490.13/x
3. Step 3: Cross multiply
   2,585.25x = 3,879.50 × 1,490.13
4. Step 4: Simplify right side
   2,585.25x = 5,780,951.88
5. Step 5: Solve for x
   x = 5,780,951.88/2,585.25
6. Step 6: Final answer
   x = 2,236.13