Finding the Fourth Proportional to 2,818.33, 4,208.77 and 2,787.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,818.33 : 4,208.77 = 2,787.82 : x
2. Step 2: Convert to fraction form
   2,818.33/4,208.77 = 2,787.82/x
3. Step 3: Cross multiply
   2,818.33x = 4,208.77 × 2,787.82
4. Step 4: Simplify right side
   2,818.33x = 11,733,300.15
5. Step 5: Solve for x
   x = 11,733,300.15/2,818.33
6. Step 6: Final answer
   x = 4,163.21