Finding the Fourth Proportional to 1,271.88, 1,754.71 and 774.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.88 : 1,754.71 = 774.33 : x
2. Step 2: Convert to fraction form
   1,271.88/1,754.71 = 774.33/x
3. Step 3: Cross multiply
   1,271.88x = 1,754.71 × 774.33
4. Step 4: Simplify right side
   1,271.88x = 1,358,724.59
5. Step 5: Solve for x
   x = 1,358,724.59/1,271.88
6. Step 6: Final answer
   x = 1,068.28