Finding the Fourth Proportional to 1,456.67, 2,181.62 and 723.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.67 : 2,181.62 = 723.89 : x
2. Step 2: Convert to fraction form
   1,456.67/2,181.62 = 723.89/x
3. Step 3: Cross multiply
   1,456.67x = 2,181.62 × 723.89
4. Step 4: Simplify right side
   1,456.67x = 1,579,243.80
5. Step 5: Solve for x
   x = 1,579,243.80/1,456.67
6. Step 6: Final answer
   x = 1,084.15