Finding the Fourth Proportional to 2,208.72, 3,046.77 and 1,379.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,208.72 : 3,046.77 = 1,379.28 : x
2. Step 2: Convert to fraction form
   2,208.72/3,046.77 = 1,379.28/x
3. Step 3: Cross multiply
   2,208.72x = 3,046.77 × 1,379.28
4. Step 4: Simplify right side
   2,208.72x = 4,202,342.03
5. Step 5: Solve for x
   x = 4,202,342.03/2,208.72
6. Step 6: Final answer
   x = 1,902.61