Finding the Fourth Proportional to 2,775.33, 4,162.86 and 827.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.33 : 4,162.86 = 827.28 : x
2. Step 2: Convert to fraction form
   2,775.33/4,162.86 = 827.28/x
3. Step 3: Cross multiply
   2,775.33x = 4,162.86 × 827.28
4. Step 4: Simplify right side
   2,775.33x = 3,443,850.82
5. Step 5: Solve for x
   x = 3,443,850.82/2,775.33
6. Step 6: Final answer
   x = 1,240.88