Finding the Fourth Proportional to 1,271.42, 1,754.74 and 773.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.42 : 1,754.74 = 773.96 : x
2. Step 2: Convert to fraction form
   1,271.42/1,754.74 = 773.96/x
3. Step 3: Cross multiply
   1,271.42x = 1,754.74 × 773.96
4. Step 4: Simplify right side
   1,271.42x = 1,358,087.86
5. Step 5: Solve for x
   x = 1,358,087.86/1,271.42
6. Step 6: Final answer
   x = 1,068.17