Finding the Fourth Proportional to 1,760.80, 2,645.28 and 1,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.80 : 2,645.28 = 1,104.72 : x
2. Step 2: Convert to fraction form
   1,760.80/2,645.28 = 1,104.72/x
3. Step 3: Cross multiply
   1,760.80x = 2,645.28 × 1,104.72
4. Step 4: Simplify right side
   1,760.80x = 2,922,293.72
5. Step 5: Solve for x
   x = 2,922,293.72/1,760.80
6. Step 6: Final answer
   x = 1,659.64