Finding the Fourth Proportional to 2,658.98, 3,991.26 and 1,273.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658.98 : 3,991.26 = 1,273.48 : x
2. Step 2: Convert to fraction form
   2,658.98/3,991.26 = 1,273.48/x
3. Step 3: Cross multiply
   2,658.98x = 3,991.26 × 1,273.48
4. Step 4: Simplify right side
   2,658.98x = 5,082,789.78
5. Step 5: Solve for x
   x = 5,082,789.78/2,658.98
6. Step 6: Final answer
   x = 1,911.56