Finding the Fourth Proportional to 2,411.56, 3,617.48 and 851.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.56 : 3,617.48 = 851.23 : x
2. Step 2: Convert to fraction form
   2,411.56/3,617.48 = 851.23/x
3. Step 3: Cross multiply
   2,411.56x = 3,617.48 × 851.23
4. Step 4: Simplify right side
   2,411.56x = 3,079,307.50
5. Step 5: Solve for x
   x = 3,079,307.50/2,411.56
6. Step 6: Final answer
   x = 1,276.89