Finding the Fourth Proportional to 2,610.26, 3,914.56 and 854.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.26 : 3,914.56 = 854.86 : x
2. Step 2: Convert to fraction form
   2,610.26/3,914.56 = 854.86/x
3. Step 3: Cross multiply
   2,610.26x = 3,914.56 × 854.86
4. Step 4: Simplify right side
   2,610.26x = 3,346,400.76
5. Step 5: Solve for x
   x = 3,346,400.76/2,610.26
6. Step 6: Final answer
   x = 1,282.02