Finding the Fourth Proportional to 2,726.96, 4,092.06 and 1,428.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,726.96 : 4,092.06 = 1,428.80 : x
2. Step 2: Convert to fraction form
   2,726.96/4,092.06 = 1,428.80/x
3. Step 3: Cross multiply
   2,726.96x = 4,092.06 × 1,428.80
4. Step 4: Simplify right side
   2,726.96x = 5,846,735.33
5. Step 5: Solve for x
   x = 5,846,735.33/2,726.96
6. Step 6: Final answer
   x = 2,144.05