Finding the Fourth Proportional to 2,721.56, 4,081.73 and 1,078.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.56 : 4,081.73 = 1,078.47 : x
2. Step 2: Convert to fraction form
   2,721.56/4,081.73 = 1,078.47/x
3. Step 3: Cross multiply
   2,721.56x = 4,081.73 × 1,078.47
4. Step 4: Simplify right side
   2,721.56x = 4,402,017.96
5. Step 5: Solve for x
   x = 4,402,017.96/2,721.56
6. Step 6: Final answer
   x = 1,617.46