Finding the Fourth Proportional to 2,667.42, 4,001.08 and 818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,667.42 : 4,001.08 = 818.50 : x
2. Step 2: Convert to fraction form
   2,667.42/4,001.08 = 818.50/x
3. Step 3: Cross multiply
   2,667.42x = 4,001.08 × 818.50
4. Step 4: Simplify right side
   2,667.42x = 3,274,875.00
5. Step 5: Solve for x
   x = 3,274,875.00/2,667.42
6. Step 6: Final answer
   x = 1,227.73