Finding the Fourth Proportional to 1,457.79, 2,011.59 and 868.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.79 : 2,011.59 = 868.22 : x
2. Step 2: Convert to fraction form
   1,457.79/2,011.59 = 868.22/x
3. Step 3: Cross multiply
   1,457.79x = 2,011.59 × 868.22
4. Step 4: Simplify right side
   1,457.79x = 1,746,492.61
5. Step 5: Solve for x
   x = 1,746,492.61/1,457.79
6. Step 6: Final answer
   x = 1,198.05