Finding the Fourth Proportional to 2,340.78, 3,229.72 and 1,456.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,340.78 : 3,229.72 = 1,456.11 : x
2. Step 2: Convert to fraction form
   2,340.78/3,229.72 = 1,456.11/x
3. Step 3: Cross multiply
   2,340.78x = 3,229.72 × 1,456.11
4. Step 4: Simplify right side
   2,340.78x = 4,702,832.14
5. Step 5: Solve for x
   x = 4,702,832.14/2,340.78
6. Step 6: Final answer
   x = 2,009.09