Finding the Fourth Proportional to 2,726.44, 4,086.72 and 1,338.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.44 : 4,086.72 = 1,338.16 : x
2. Step 2: Convert to fraction form
   2,726.44/4,086.72 = 1,338.16/x
3. Step 3: Cross multiply
   2,726.44x = 4,086.72 × 1,338.16
4. Step 4: Simplify right side
   2,726.44x = 5,468,685.24
5. Step 5: Solve for x
   x = 5,468,685.24/2,726.44
6. Step 6: Final answer
   x = 2,005.80