Finding the Fourth Proportional to 1,456.72, 2,187.24 and 1,386.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.72 : 2,187.24 = 1,386.24 : x
2. Step 2: Convert to fraction form
   1,456.72/2,187.24 = 1,386.24/x
3. Step 3: Cross multiply
   1,456.72x = 2,187.24 × 1,386.24
4. Step 4: Simplify right side
   1,456.72x = 3,032,039.58
5. Step 5: Solve for x
   x = 3,032,039.58/1,456.72
6. Step 6: Final answer
   x = 2,081.42