Finding the Fourth Proportional to 2,266.63, 3,127.80 and 1,271.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266.63 : 3,127.80 = 1,271.91 : x
2. Step 2: Convert to fraction form
   2,266.63/3,127.80 = 1,271.91/x
3. Step 3: Cross multiply
   2,266.63x = 3,127.80 × 1,271.91
4. Step 4: Simplify right side
   2,266.63x = 3,978,280.10
5. Step 5: Solve for x
   x = 3,978,280.10/2,266.63
6. Step 6: Final answer
   x = 1,755.15