Finding the Fourth Proportional to 2,678.53, 4,016.78 and 923.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678.53 : 4,016.78 = 923.03 : x
2. Step 2: Convert to fraction form
   2,678.53/4,016.78 = 923.03/x
3. Step 3: Cross multiply
   2,678.53x = 4,016.78 × 923.03
4. Step 4: Simplify right side
   2,678.53x = 3,707,603.83
5. Step 5: Solve for x
   x = 3,707,603.83/2,678.53
6. Step 6: Final answer
   x = 1,384.20