Finding the Fourth Proportional to 1,566.81, 2,162.15 and 868.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,566.81 : 2,162.15 = 868.17 : x
2. Step 2: Convert to fraction form
   1,566.81/2,162.15 = 868.17/x
3. Step 3: Cross multiply
   1,566.81x = 2,162.15 × 868.17
4. Step 4: Simplify right side
   1,566.81x = 1,877,109.42
5. Step 5: Solve for x
   x = 1,877,109.42/1,566.81
6. Step 6: Final answer
   x = 1,198.05