Finding the Fourth Proportional to 2,721.15, 4,078.28 and 1,334.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,721.15 : 4,078.28 = 1,334.16 : x
2. Step 2: Convert to fraction form
   2,721.15/4,078.28 = 1,334.16/x
3. Step 3: Cross multiply
   2,721.15x = 4,078.28 × 1,334.16
4. Step 4: Simplify right side
   2,721.15x = 5,441,050.98
5. Step 5: Solve for x
   x = 5,441,050.98/2,721.15
6. Step 6: Final answer
   x = 1,999.54