Finding the Fourth Proportional to 1,964.30, 2,710.72 and 1,080.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.30 : 2,710.72 = 1,080.16 : x
2. Step 2: Convert to fraction form
   1,964.30/2,710.72 = 1,080.16/x
3. Step 3: Cross multiply
   1,964.30x = 2,710.72 × 1,080.16
4. Step 4: Simplify right side
   1,964.30x = 2,928,011.32
5. Step 5: Solve for x
   x = 2,928,011.32/1,964.30
6. Step 6: Final answer
   x = 1,490.61