Finding the Fourth Proportional to 2,055.28, 3,067.13 and 1,780.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.28 : 3,067.13 = 1,780.96 : x
2. Step 2: Convert to fraction form
   2,055.28/3,067.13 = 1,780.96/x
3. Step 3: Cross multiply
   2,055.28x = 3,067.13 × 1,780.96
4. Step 4: Simplify right side
   2,055.28x = 5,462,435.84
5. Step 5: Solve for x
   x = 5,462,435.84/2,055.28
6. Step 6: Final answer
   x = 2,657.76