Finding the Fourth Proportional to 2,760.48, 4,141.33 and 812.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.48 : 4,141.33 = 812.84 : x
2. Step 2: Convert to fraction form
   2,760.48/4,141.33 = 812.84/x
3. Step 3: Cross multiply
   2,760.48x = 4,141.33 × 812.84
4. Step 4: Simplify right side
   2,760.48x = 3,366,215.94
5. Step 5: Solve for x
   x = 3,366,215.94/2,760.48
6. Step 6: Final answer
   x = 1,219.43