Finding the Fourth Proportional to 2,453.59, 3,680.94 and 810.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.59 : 3,680.94 = 810.10 : x
2. Step 2: Convert to fraction form
   2,453.59/3,680.94 = 810.10/x
3. Step 3: Cross multiply
   2,453.59x = 3,680.94 × 810.10
4. Step 4: Simplify right side
   2,453.59x = 2,981,929.49
5. Step 5: Solve for x
   x = 2,981,929.49/2,453.59
6. Step 6: Final answer
   x = 1,215.33