Finding the Fourth Proportional to 2,283.98, 3,423.89 and 822.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,283.98 : 3,423.89 = 822.09 : x
2. Step 2: Convert to fraction form
   2,283.98/3,423.89 = 822.09/x
3. Step 3: Cross multiply
   2,283.98x = 3,423.89 × 822.09
4. Step 4: Simplify right side
   2,283.98x = 2,814,760.62
5. Step 5: Solve for x
   x = 2,814,760.62/2,283.98
6. Step 6: Final answer
   x = 1,232.40