Finding the Fourth Proportional to 2,085.94, 3,126.46 and 851.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.94 : 3,126.46 = 851.96 : x
2. Step 2: Convert to fraction form
   2,085.94/3,126.46 = 851.96/x
3. Step 3: Cross multiply
   2,085.94x = 3,126.46 × 851.96
4. Step 4: Simplify right side
   2,085.94x = 2,663,618.86
5. Step 5: Solve for x
   x = 2,663,618.86/2,085.94
6. Step 6: Final answer
   x = 1,276.94