Finding the Fourth Proportional to 2,042.82, 3,063.42 and 810.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.82 : 3,063.42 = 810.81 : x
2. Step 2: Convert to fraction form
   2,042.82/3,063.42 = 810.81/x
3. Step 3: Cross multiply
   2,042.82x = 3,063.42 × 810.81
4. Step 4: Simplify right side
   2,042.82x = 2,483,851.57
5. Step 5: Solve for x
   x = 2,483,851.57/2,042.82
6. Step 6: Final answer
   x = 1,215.89