Finding the Fourth Proportional to 2,828.29, 4,238.32 and 2,535.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,828.29 : 4,238.32 = 2,535.78 : x
2. Step 2: Convert to fraction form
   2,828.29/4,238.32 = 2,535.78/x
3. Step 3: Cross multiply
   2,828.29x = 4,238.32 × 2,535.78
4. Step 4: Simplify right side
   2,828.29x = 10,747,447.09
5. Step 5: Solve for x
   x = 10,747,447.09/2,828.29
6. Step 6: Final answer
   x = 3,799.98