Finding the Fourth Proportional to 2,760.25, 4,140.83 and 911.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.25 : 4,140.83 = 911.47 : x
2. Step 2: Convert to fraction form
   2,760.25/4,140.83 = 911.47/x
3. Step 3: Cross multiply
   2,760.25x = 4,140.83 × 911.47
4. Step 4: Simplify right side
   2,760.25x = 3,774,242.32
5. Step 5: Solve for x
   x = 3,774,242.32/2,760.25
6. Step 6: Final answer
   x = 1,367.36