Finding the Fourth Proportional to 2,180.05, 3,270.14 and 719.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,180.05 : 3,270.14 = 719.31 : x
2. Step 2: Convert to fraction form
   2,180.05/3,270.14 = 719.31/x
3. Step 3: Cross multiply
   2,180.05x = 3,270.14 × 719.31
4. Step 4: Simplify right side
   2,180.05x = 2,352,255.77
5. Step 5: Solve for x
   x = 2,352,255.77/2,180.05
6. Step 6: Final answer
   x = 1,078.99