Finding the Fourth Proportional to 1,271.82, 1,908.54 and 694.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.82 : 1,908.54 = 694.56 : x
2. Step 2: Convert to fraction form
   1,271.82/1,908.54 = 694.56/x
3. Step 3: Cross multiply
   1,271.82x = 1,908.54 × 694.56
4. Step 4: Simplify right side
   1,271.82x = 1,325,595.54
5. Step 5: Solve for x
   x = 1,325,595.54/1,271.82
6. Step 6: Final answer
   x = 1,042.28