Finding the Fourth Proportional to 3,054.91, 4,215.87 and 1,728.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,054.91 : 4,215.87 = 1,728.82 : x
2. Step 2: Convert to fraction form
   3,054.91/4,215.87 = 1,728.82/x
3. Step 3: Cross multiply
   3,054.91x = 4,215.87 × 1,728.82
4. Step 4: Simplify right side
   3,054.91x = 7,288,480.37
5. Step 5: Solve for x
   x = 7,288,480.37/3,054.91
6. Step 6: Final answer
   x = 2,385.82