Finding the Fourth Proportional to 2,760.81, 4,141.17 and 911.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.81 : 4,141.17 = 911.94 : x
2. Step 2: Convert to fraction form
   2,760.81/4,141.17 = 911.94/x
3. Step 3: Cross multiply
   2,760.81x = 4,141.17 × 911.94
4. Step 4: Simplify right side
   2,760.81x = 3,776,498.57
5. Step 5: Solve for x
   x = 3,776,498.57/2,760.81
6. Step 6: Final answer
   x = 1,367.90