Finding the Fourth Proportional to 2,760.80, 4,141.34 and 912.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.80 : 4,141.34 = 912.08 : x
2. Step 2: Convert to fraction form
   2,760.80/4,141.34 = 912.08/x
3. Step 3: Cross multiply
   2,760.80x = 4,141.34 × 912.08
4. Step 4: Simplify right side
   2,760.80x = 3,777,233.39
5. Step 5: Solve for x
   x = 3,777,233.39/2,760.80
6. Step 6: Final answer
   x = 1,368.17