Finding the Fourth Proportional to 1,964.36, 2,710.83 and 1,080.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.36 : 2,710.83 = 1,080.15 : x
2. Step 2: Convert to fraction form
   1,964.36/2,710.83 = 1,080.15/x
3. Step 3: Cross multiply
   1,964.36x = 2,710.83 × 1,080.15
4. Step 4: Simplify right side
   1,964.36x = 2,928,103.02
5. Step 5: Solve for x
   x = 2,928,103.02/1,964.36
6. Step 6: Final answer
   x = 1,490.62