Finding the Fourth Proportional to 2,180.72, 3,270.30 and 719.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.72 : 3,270.30 = 719.54 : x
2. Step 2: Convert to fraction form
   2,180.72/3,270.30 = 719.54/x
3. Step 3: Cross multiply
   2,180.72x = 3,270.30 × 719.54
4. Step 4: Simplify right side
   2,180.72x = 2,353,111.66
5. Step 5: Solve for x
   x = 2,353,111.66/2,180.72
6. Step 6: Final answer
   x = 1,079.05