Finding the Fourth Proportional to 3,144.81, 4,717.52 and 836.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.81 : 4,717.52 = 836.31 : x
2. Step 2: Convert to fraction form
   3,144.81/4,717.52 = 836.31/x
3. Step 3: Cross multiply
   3,144.81x = 4,717.52 × 836.31
4. Step 4: Simplify right side
   3,144.81x = 3,945,309.15
5. Step 5: Solve for x
   x = 3,945,309.15/3,144.81
6. Step 6: Final answer
   x = 1,254.55