Finding the Fourth Proportional to 2,054.82, 3,079.39 and 1,780.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,054.82 : 3,079.39 = 1,780.23 : x
2. Step 2: Convert to fraction form
   2,054.82/3,079.39 = 1,780.23/x
3. Step 3: Cross multiply
   2,054.82x = 3,079.39 × 1,780.23
4. Step 4: Simplify right side
   2,054.82x = 5,482,022.46
5. Step 5: Solve for x
   x = 5,482,022.46/2,054.82
6. Step 6: Final answer
   x = 2,667.88