Finding the Fourth Proportional to 2,622.85, 3,930.82 and 1,234.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.85 : 3,930.82 = 1,234.31 : x
2. Step 2: Convert to fraction form
   2,622.85/3,930.82 = 1,234.31/x
3. Step 3: Cross multiply
   2,622.85x = 3,930.82 × 1,234.31
4. Step 4: Simplify right side
   2,622.85x = 4,851,827.69
5. Step 5: Solve for x
   x = 4,851,827.69/2,622.85
6. Step 6: Final answer
   x = 1,849.83