Finding the Fourth Proportional to 1,426.16, 1,969.62 and 1,271.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.16 : 1,969.62 = 1,271.55 : x
2. Step 2: Convert to fraction form
   1,426.16/1,969.62 = 1,271.55/x
3. Step 3: Cross multiply
   1,426.16x = 1,969.62 × 1,271.55
4. Step 4: Simplify right side
   1,426.16x = 2,504,461.85
5. Step 5: Solve for x
   x = 2,504,461.85/1,426.16
6. Step 6: Final answer
   x = 1,756.09