Finding the Fourth Proportional to 2,809.00, 4,213.47 and 728.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,809.00 : 4,213.47 = 728.82 : x
2. Step 2: Convert to fraction form
   2,809.00/4,213.47 = 728.82/x
3. Step 3: Cross multiply
   2,809.00x = 4,213.47 × 728.82
4. Step 4: Simplify right side
   2,809.00x = 3,070,849.89
5. Step 5: Solve for x
   x = 3,070,849.89/2,809.00
6. Step 6: Final answer
   x = 1,093.22