Finding the Fourth Proportional to 1,964.46, 2,710.88 and 1,080.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.46 : 2,710.88 = 1,080.21 : x
2. Step 2: Convert to fraction form
   1,964.46/2,710.88 = 1,080.21/x
3. Step 3: Cross multiply
   1,964.46x = 2,710.88 × 1,080.21
4. Step 4: Simplify right side
   1,964.46x = 2,928,300.73
5. Step 5: Solve for x
   x = 2,928,300.73/1,964.46
6. Step 6: Final answer
   x = 1,490.64