Finding the Fourth Proportional to 2,453.52, 3,679.92 and 810.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.52 : 3,679.92 = 810.12 : x
2. Step 2: Convert to fraction form
   2,453.52/3,679.92 = 810.12/x
3. Step 3: Cross multiply
   2,453.52x = 3,679.92 × 810.12
4. Step 4: Simplify right side
   2,453.52x = 2,981,176.79
5. Step 5: Solve for x
   x = 2,981,176.79/2,453.52
6. Step 6: Final answer
   x = 1,215.06