Finding the Fourth Proportional to 1,425.88, 1,967.69 and 866.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.88 : 1,967.69 = 866.37 : x
2. Step 2: Convert to fraction form
   1,425.88/1,967.69 = 866.37/x
3. Step 3: Cross multiply
   1,425.88x = 1,967.69 × 866.37
4. Step 4: Simplify right side
   1,425.88x = 1,704,751.60
5. Step 5: Solve for x
   x = 1,704,751.60/1,425.88
6. Step 6: Final answer
   x = 1,195.58