Finding the Fourth Proportional to 2,667.66, 4,002.08 and 818.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.66 : 4,002.08 = 818.94 : x
2. Step 2: Convert to fraction form
   2,667.66/4,002.08 = 818.94/x
3. Step 3: Cross multiply
   2,667.66x = 4,002.08 × 818.94
4. Step 4: Simplify right side
   2,667.66x = 3,277,447.45
5. Step 5: Solve for x
   x = 3,277,447.45/2,667.66
6. Step 6: Final answer
   x = 1,228.59