Finding the Fourth Proportional to 1,464.72, 2,198.56 and 1,143.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,464.72 : 2,198.56 = 1,143.60 : x
2. Step 2: Convert to fraction form
   1,464.72/2,198.56 = 1,143.60/x
3. Step 3: Cross multiply
   1,464.72x = 2,198.56 × 1,143.60
4. Step 4: Simplify right side
   1,464.72x = 2,514,273.22
5. Step 5: Solve for x
   x = 2,514,273.22/1,464.72
6. Step 6: Final answer
   x = 1,716.56