Finding the Fourth Proportional to 2,752.05, 4,128.21 and 804.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,752.05 : 4,128.21 = 804.27 : x
2. Step 2: Convert to fraction form
   2,752.05/4,128.21 = 804.27/x
3. Step 3: Cross multiply
   2,752.05x = 4,128.21 × 804.27
4. Step 4: Simplify right side
   2,752.05x = 3,320,195.46
5. Step 5: Solve for x
   x = 3,320,195.46/2,752.05
6. Step 6: Final answer
   x = 1,206.44