Finding the Fourth Proportional to 2,458.40, 3,680.76 and 1,590.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.40 : 3,680.76 = 1,590.08 : x
2. Step 2: Convert to fraction form
   2,458.40/3,680.76 = 1,590.08/x
3. Step 3: Cross multiply
   2,458.40x = 3,680.76 × 1,590.08
4. Step 4: Simplify right side
   2,458.40x = 5,852,702.86
5. Step 5: Solve for x
   x = 5,852,702.86/2,458.40
6. Step 6: Final answer
   x = 2,380.70