Finding the Fourth Proportional to 1,271.62, 1,754.31 and 774.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.62 : 1,754.31 = 774.18 : x
2. Step 2: Convert to fraction form
   1,271.62/1,754.31 = 774.18/x
3. Step 3: Cross multiply
   1,271.62x = 1,754.31 × 774.18
4. Step 4: Simplify right side
   1,271.62x = 1,358,151.72
5. Step 5: Solve for x
   x = 1,358,151.72/1,271.62
6. Step 6: Final answer
   x = 1,068.05