Finding the Fourth Proportional to 1,243.61, 1,716.24 and 719.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.61 : 1,716.24 = 719.54 : x
2. Step 2: Convert to fraction form
   1,243.61/1,716.24 = 719.54/x
3. Step 3: Cross multiply
   1,243.61x = 1,716.24 × 719.54
4. Step 4: Simplify right side
   1,243.61x = 1,234,903.33
5. Step 5: Solve for x
   x = 1,234,903.33/1,243.61
6. Step 6: Final answer
   x = 993.00