Finding the Fourth Proportional to 1,425.91, 1,967.92 and 866.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.91 : 1,967.92 = 866.52 : x
2. Step 2: Convert to fraction form
   1,425.91/1,967.92 = 866.52/x
3. Step 3: Cross multiply
   1,425.91x = 1,967.92 × 866.52
4. Step 4: Simplify right side
   1,425.91x = 1,705,242.04
5. Step 5: Solve for x
   x = 1,705,242.04/1,425.91
6. Step 6: Final answer
   x = 1,195.90