Finding the Fourth Proportional to 1,425.83, 1,967.17 and 866.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.83 : 1,967.17 = 866.12 : x
2. Step 2: Convert to fraction form
   1,425.83/1,967.17 = 866.12/x
3. Step 3: Cross multiply
   1,425.83x = 1,967.17 × 866.12
4. Step 4: Simplify right side
   1,425.83x = 1,703,805.28
5. Step 5: Solve for x
   x = 1,703,805.28/1,425.83
6. Step 6: Final answer
   x = 1,194.96