Finding the Fourth Proportional to 1,964.55, 2,710.86 and 1,080.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,964.55 : 2,710.86 = 1,080.30 : x
2. Step 2: Convert to fraction form
   1,964.55/2,710.86 = 1,080.30/x
3. Step 3: Cross multiply
   1,964.55x = 2,710.86 × 1,080.30
4. Step 4: Simplify right side
   1,964.55x = 2,928,538.01
5. Step 5: Solve for x
   x = 2,928,538.01/1,964.55
6. Step 6: Final answer
   x = 1,490.69