Finding the Fourth Proportional to 1,965.05, 2,711.78 and 1,080.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.05 : 2,711.78 = 1,080.83 : x
2. Step 2: Convert to fraction form
   1,965.05/2,711.78 = 1,080.83/x
3. Step 3: Cross multiply
   1,965.05x = 2,711.78 × 1,080.83
4. Step 4: Simplify right side
   1,965.05x = 2,930,954.21
5. Step 5: Solve for x
   x = 2,930,954.21/1,965.05
6. Step 6: Final answer
   x = 1,491.55