Finding the Fourth Proportional to 1,456.38, 2,181.48 and 724.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.38 : 2,181.48 = 724.41 : x
2. Step 2: Convert to fraction form
   1,456.38/2,181.48 = 724.41/x
3. Step 3: Cross multiply
   1,456.38x = 2,181.48 × 724.41
4. Step 4: Simplify right side
   1,456.38x = 1,580,285.93
5. Step 5: Solve for x
   x = 1,580,285.93/1,456.38
6. Step 6: Final answer
   x = 1,085.08