Finding the Fourth Proportional to 1,457.69, 2,011.82 and 868.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.69 : 2,011.82 = 868.23 : x
2. Step 2: Convert to fraction form
   1,457.69/2,011.82 = 868.23/x
3. Step 3: Cross multiply
   1,457.69x = 2,011.82 × 868.23
4. Step 4: Simplify right side
   1,457.69x = 1,746,718.14
5. Step 5: Solve for x
   x = 1,746,718.14/1,457.69
6. Step 6: Final answer
   x = 1,198.28