Finding the Fourth Proportional to 2,456.05, 3,682.37 and 812.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.05 : 3,682.37 = 812.35 : x
2. Step 2: Convert to fraction form
   2,456.05/3,682.37 = 812.35/x
3. Step 3: Cross multiply
   2,456.05x = 3,682.37 × 812.35
4. Step 4: Simplify right side
   2,456.05x = 2,991,369.21
5. Step 5: Solve for x
   x = 2,991,369.21/2,456.05
6. Step 6: Final answer
   x = 1,217.96