Finding the Fourth Proportional to 2,084.73, 3,126.23 and 851.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.73 : 3,126.23 = 851.30 : x
2. Step 2: Convert to fraction form
   2,084.73/3,126.23 = 851.30/x
3. Step 3: Cross multiply
   2,084.73x = 3,126.23 × 851.30
4. Step 4: Simplify right side
   2,084.73x = 2,661,359.60
5. Step 5: Solve for x
   x = 2,661,359.60/2,084.73
6. Step 6: Final answer
   x = 1,276.60