Finding the Fourth Proportional to 2,667.02, 3,678.82 and 1,919.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.02 : 3,678.82 = 1,919.79 : x
2. Step 2: Convert to fraction form
   2,667.02/3,678.82 = 1,919.79/x
3. Step 3: Cross multiply
   2,667.02x = 3,678.82 × 1,919.79
4. Step 4: Simplify right side
   2,667.02x = 7,062,557.05
5. Step 5: Solve for x
   x = 7,062,557.05/2,667.02
6. Step 6: Final answer
   x = 2,648.11