Finding the Fourth Proportional to 2,265.72, 3,126.81 and 1,271.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.72 : 3,126.81 = 1,271.22 : x
2. Step 2: Convert to fraction form
   2,265.72/3,126.81 = 1,271.22/x
3. Step 3: Cross multiply
   2,265.72x = 3,126.81 × 1,271.22
4. Step 4: Simplify right side
   2,265.72x = 3,974,863.41
5. Step 5: Solve for x
   x = 3,974,863.41/2,265.72
6. Step 6: Final answer
   x = 1,754.35