Finding the Fourth Proportional to 2,558.97, 3,839.22 and 999.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.97 : 3,839.22 = 999.27 : x
2. Step 2: Convert to fraction form
   2,558.97/3,839.22 = 999.27/x
3. Step 3: Cross multiply
   2,558.97x = 3,839.22 × 999.27
4. Step 4: Simplify right side
   2,558.97x = 3,836,417.37
5. Step 5: Solve for x
   x = 3,836,417.37/2,558.97
6. Step 6: Final answer
   x = 1,499.20