Finding the Fourth Proportional to 3,196.67, 4,794.62 and 856.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.67 : 4,794.62 = 856.86 : x
2. Step 2: Convert to fraction form
   3,196.67/4,794.62 = 856.86/x
3. Step 3: Cross multiply
   3,196.67x = 4,794.62 × 856.86
4. Step 4: Simplify right side
   3,196.67x = 4,108,295.83
5. Step 5: Solve for x
   x = 4,108,295.83/3,196.67
6. Step 6: Final answer
   x = 1,285.18