Finding the Fourth Proportional to 2,634.34, 3,951.78 and 854.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.34 : 3,951.78 = 854.96 : x
2. Step 2: Convert to fraction form
   2,634.34/3,951.78 = 854.96/x
3. Step 3: Cross multiply
   2,634.34x = 3,951.78 × 854.96
4. Step 4: Simplify right side
   2,634.34x = 3,378,613.83
5. Step 5: Solve for x
   x = 3,378,613.83/2,634.34
6. Step 6: Final answer
   x = 1,282.53