Finding the Fourth Proportional to 2,280.92, 3,145.56 and 2,111.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.92 : 3,145.56 = 2,111.24 : x
2. Step 2: Convert to fraction form
   2,280.92/3,145.56 = 2,111.24/x
3. Step 3: Cross multiply
   2,280.92x = 3,145.56 × 2,111.24
4. Step 4: Simplify right side
   2,280.92x = 6,641,032.09
5. Step 5: Solve for x
   x = 6,641,032.09/2,280.92
6. Step 6: Final answer
   x = 2,911.56