Finding the Fourth Proportional to 2,045.33, 3,066.20 and 728.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.33 : 3,066.20 = 728.88 : x
2. Step 2: Convert to fraction form
   2,045.33/3,066.20 = 728.88/x
3. Step 3: Cross multiply
   2,045.33x = 3,066.20 × 728.88
4. Step 4: Simplify right side
   2,045.33x = 2,234,891.86
5. Step 5: Solve for x
   x = 2,234,891.86/2,045.33
6. Step 6: Final answer
   x = 1,092.68