Finding the Fourth Proportional to 2,583.32, 3,874.50 and 851.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,583.32 : 3,874.50 = 851.72 : x
2. Step 2: Convert to fraction form
   2,583.32/3,874.50 = 851.72/x
3. Step 3: Cross multiply
   2,583.32x = 3,874.50 × 851.72
4. Step 4: Simplify right side
   2,583.32x = 3,299,989.14
5. Step 5: Solve for x
   x = 3,299,989.14/2,583.32
6. Step 6: Final answer
   x = 1,277.42