Finding the Fourth Proportional to 2,770.56, 4,155.88 and 822.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.56 : 4,155.88 = 822.82 : x
2. Step 2: Convert to fraction form
   2,770.56/4,155.88 = 822.82/x
3. Step 3: Cross multiply
   2,770.56x = 4,155.88 × 822.82
4. Step 4: Simplify right side
   2,770.56x = 3,419,541.18
5. Step 5: Solve for x
   x = 3,419,541.18/2,770.56
6. Step 6: Final answer
   x = 1,234.24