Finding the Fourth Proportional to 2,185.67, 3,277.67 and 851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.67 : 3,277.67 = 851.30 : x
2. Step 2: Convert to fraction form
   2,185.67/3,277.67 = 851.30/x
3. Step 3: Cross multiply
   2,185.67x = 3,277.67 × 851.30
4. Step 4: Simplify right side
   2,185.67x = 2,790,290.79
5. Step 5: Solve for x
   x = 2,790,290.79/2,185.67
6. Step 6: Final answer
   x = 1,276.63