Finding the Fourth Proportional to 1,271.52, 1,754.22 and 774

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.52 : 1,754.22 = 774 : x
2. Step 2: Convert to fraction form
   1,271.52/1,754.22 = 774/x
3. Step 3: Cross multiply
   1,271.52x = 1,754.22 × 774
4. Step 4: Simplify right side
   1,271.52x = 1,357,766.28
5. Step 5: Solve for x
   x = 1,357,766.28/1,271.52
6. Step 6: Final answer
   x = 1,067.83