Finding the Fourth Proportional to 1,977.24, 2,728.59 and 1,080.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,977.24 : 2,728.59 = 1,080.99 : x
2. Step 2: Convert to fraction form
   1,977.24/2,728.59 = 1,080.99/x
3. Step 3: Cross multiply
   1,977.24x = 2,728.59 × 1,080.99
4. Step 4: Simplify right side
   1,977.24x = 2,949,578.50
5. Step 5: Solve for x
   x = 2,949,578.50/1,977.24
6. Step 6: Final answer
   x = 1,491.77