Finding the Fourth Proportional to 2,707.14, 4,053.22 and 1,388.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,707.14 : 4,053.22 = 1,388.05 : x
2. Step 2: Convert to fraction form
   2,707.14/4,053.22 = 1,388.05/x
3. Step 3: Cross multiply
   2,707.14x = 4,053.22 × 1,388.05
4. Step 4: Simplify right side
   2,707.14x = 5,626,072.02
5. Step 5: Solve for x
   x = 5,626,072.02/2,707.14
6. Step 6: Final answer
   x = 2,078.23