Finding the Fourth Proportional to 2,456.51, 3,683.35 and 812.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.51 : 3,683.35 = 812.62 : x
2. Step 2: Convert to fraction form
   2,456.51/3,683.35 = 812.62/x
3. Step 3: Cross multiply
   2,456.51x = 3,683.35 × 812.62
4. Step 4: Simplify right side
   2,456.51x = 2,993,152.64
5. Step 5: Solve for x
   x = 2,993,152.64/2,456.51
6. Step 6: Final answer
   x = 1,218.46