Finding the Fourth Proportional to 2,786.16, 3,843.86 and 1,667.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.16 : 3,843.86 = 1,667.12 : x
2. Step 2: Convert to fraction form
   2,786.16/3,843.86 = 1,667.12/x
3. Step 3: Cross multiply
   2,786.16x = 3,843.86 × 1,667.12
4. Step 4: Simplify right side
   2,786.16x = 6,408,175.88
5. Step 5: Solve for x
   x = 6,408,175.88/2,786.16
6. Step 6: Final answer
   x = 2,300.00