Finding the Fourth Proportional to 2,266.78, 3,127.95 and 1,271.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.78 : 3,127.95 = 1,271.88 : x
2. Step 2: Convert to fraction form
   2,266.78/3,127.95 = 1,271.88/x
3. Step 3: Cross multiply
   2,266.78x = 3,127.95 × 1,271.88
4. Step 4: Simplify right side
   2,266.78x = 3,978,377.05
5. Step 5: Solve for x
   x = 3,978,377.05/2,266.78
6. Step 6: Final answer
   x = 1,755.08