Finding the Fourth Proportional to 2,770.34, 4,156.20 and 822.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.34 : 4,156.20 = 822.49 : x
2. Step 2: Convert to fraction form
   2,770.34/4,156.20 = 822.49/x
3. Step 3: Cross multiply
   2,770.34x = 4,156.20 × 822.49
4. Step 4: Simplify right side
   2,770.34x = 3,418,422.55
5. Step 5: Solve for x
   x = 3,418,422.55/2,770.34
6. Step 6: Final answer
   x = 1,233.94