Finding the Fourth Proportional to 2,067.60, 3,103.60 and 835.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,067.60 : 3,103.60 = 835.86 : x
2. Step 2: Convert to fraction form
   2,067.60/3,103.60 = 835.86/x
3. Step 3: Cross multiply
   2,067.60x = 3,103.60 × 835.86
4. Step 4: Simplify right side
   2,067.60x = 2,594,175.10
5. Step 5: Solve for x
   x = 2,594,175.10/2,067.60
6. Step 6: Final answer
   x = 1,254.68