Finding the Fourth Proportional to 1,964.69, 2,711.27 and 1,080.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.69 : 2,711.27 = 1,080.51 : x
2. Step 2: Convert to fraction form
   1,964.69/2,711.27 = 1,080.51/x
3. Step 3: Cross multiply
   1,964.69x = 2,711.27 × 1,080.51
4. Step 4: Simplify right side
   1,964.69x = 2,929,546.88
5. Step 5: Solve for x
   x = 2,929,546.88/1,964.69
6. Step 6: Final answer
   x = 1,491.10