Finding the Fourth Proportional to 2,139.24, 3,188.89 and 2,055.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.24 : 3,188.89 = 2,055.08 : x
2. Step 2: Convert to fraction form
   2,139.24/3,188.89 = 2,055.08/x
3. Step 3: Cross multiply
   2,139.24x = 3,188.89 × 2,055.08
4. Step 4: Simplify right side
   2,139.24x = 6,553,424.06
5. Step 5: Solve for x
   x = 6,553,424.06/2,139.24
6. Step 6: Final answer
   x = 3,063.44