Finding the Fourth Proportional to 2,659.36, 3,667.38 and 2,028.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.36 : 3,667.38 = 2,028.78 : x
2. Step 2: Convert to fraction form
   2,659.36/3,667.38 = 2,028.78/x
3. Step 3: Cross multiply
   2,659.36x = 3,667.38 × 2,028.78
4. Step 4: Simplify right side
   2,659.36x = 7,440,307.20
5. Step 5: Solve for x
   x = 7,440,307.20/2,659.36
6. Step 6: Final answer
   x = 2,797.78