Finding the Fourth Proportional to 1,964.23, 2,710.69 and 1,080.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.23 : 2,710.69 = 1,080.05 : x
2. Step 2: Convert to fraction form
   1,964.23/2,710.69 = 1,080.05/x
3. Step 3: Cross multiply
   1,964.23x = 2,710.69 × 1,080.05
4. Step 4: Simplify right side
   1,964.23x = 2,927,680.73
5. Step 5: Solve for x
   x = 2,927,680.73/1,964.23
6. Step 6: Final answer
   x = 1,490.50