Finding the Fourth Proportional to 1,425.90, 1,967.43 and 866.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.90 : 1,967.43 = 866.67 : x
2. Step 2: Convert to fraction form
   1,425.90/1,967.43 = 866.67/x
3. Step 3: Cross multiply
   1,425.90x = 1,967.43 × 866.67
4. Step 4: Simplify right side
   1,425.90x = 1,705,112.56
5. Step 5: Solve for x
   x = 1,705,112.56/1,425.90
6. Step 6: Final answer
   x = 1,195.81