Finding the Fourth Proportional to 2,753.03, 4,128.62 and 804.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,753.03 : 4,128.62 = 804.78 : x
2. Step 2: Convert to fraction form
   2,753.03/4,128.62 = 804.78/x
3. Step 3: Cross multiply
   2,753.03x = 4,128.62 × 804.78
4. Step 4: Simplify right side
   2,753.03x = 3,322,626.78
5. Step 5: Solve for x
   x = 3,322,626.78/2,753.03
6. Step 6: Final answer
   x = 1,206.90