Finding the Fourth Proportional to 2,658.98, 3,989.82 and 1,016.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.98 : 3,989.82 = 1,016.58 : x
2. Step 2: Convert to fraction form
   2,658.98/3,989.82 = 1,016.58/x
3. Step 3: Cross multiply
   2,658.98x = 3,989.82 × 1,016.58
4. Step 4: Simplify right side
   2,658.98x = 4,055,971.22
5. Step 5: Solve for x
   x = 4,055,971.22/2,658.98
6. Step 6: Final answer
   x = 1,525.39