Finding the Fourth Proportional to 2,266.93, 3,128.13 and 1,271.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.93 : 3,128.13 = 1,271.98 : x
2. Step 2: Convert to fraction form
   2,266.93/3,128.13 = 1,271.98/x
3. Step 3: Cross multiply
   2,266.93x = 3,128.13 × 1,271.98
4. Step 4: Simplify right side
   2,266.93x = 3,978,918.80
5. Step 5: Solve for x
   x = 3,978,918.80/2,266.93
6. Step 6: Final answer
   x = 1,755.20