Finding the Fourth Proportional to 1,965.17, 2,711.89 and 1,080.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,965.17 : 2,711.89 = 1,080.95 : x
2. Step 2: Convert to fraction form
   1,965.17/2,711.89 = 1,080.95/x
3. Step 3: Cross multiply
   1,965.17x = 2,711.89 × 1,080.95
4. Step 4: Simplify right side
   1,965.17x = 2,931,421.57
5. Step 5: Solve for x
   x = 2,931,421.57/1,965.17
6. Step 6: Final answer
   x = 1,491.69