Finding the Fourth Proportional to 2,084.18, 3,126.18 and 851.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.18 : 3,126.18 = 851.18 : x
2. Step 2: Convert to fraction form
   2,084.18/3,126.18 = 851.18/x
3. Step 3: Cross multiply
   2,084.18x = 3,126.18 × 851.18
4. Step 4: Simplify right side
   2,084.18x = 2,660,941.89
5. Step 5: Solve for x
   x = 2,660,941.89/2,084.18
6. Step 6: Final answer
   x = 1,276.73