Finding the Fourth Proportional to 2,825.28, 4,238.37 and 877.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,825.28 : 4,238.37 = 877.23 : x
2. Step 2: Convert to fraction form
   2,825.28/4,238.37 = 877.23/x
3. Step 3: Cross multiply
   2,825.28x = 4,238.37 × 877.23
4. Step 4: Simplify right side
   2,825.28x = 3,718,025.32
5. Step 5: Solve for x
   x = 3,718,025.32/2,825.28
6. Step 6: Final answer
   x = 1,315.98