Finding the Fourth Proportional to 2,583.10, 3,874.27 and 851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.10 : 3,874.27 = 851.50 : x
2. Step 2: Convert to fraction form
   2,583.10/3,874.27 = 851.50/x
3. Step 3: Cross multiply
   2,583.10x = 3,874.27 × 851.50
4. Step 4: Simplify right side
   2,583.10x = 3,298,940.91
5. Step 5: Solve for x
   x = 3,298,940.91/2,583.10
6. Step 6: Final answer
   x = 1,277.12