Finding the Fourth Proportional to 2,828.25, 4,238.28 and 2,480.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828.25 : 4,238.28 = 2,480.76 : x
2. Step 2: Convert to fraction form
   2,828.25/4,238.28 = 2,480.76/x
3. Step 3: Cross multiply
   2,828.25x = 4,238.28 × 2,480.76
4. Step 4: Simplify right side
   2,828.25x = 10,514,155.49
5. Step 5: Solve for x
   x = 10,514,155.49/2,828.25
6. Step 6: Final answer
   x = 3,717.55