Finding the Fourth Proportional to 1,457.88, 2,012.18 and 868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.88 : 2,012.18 = 868.76 : x
2. Step 2: Convert to fraction form
   1,457.88/2,012.18 = 868.76/x
3. Step 3: Cross multiply
   1,457.88x = 2,012.18 × 868.76
4. Step 4: Simplify right side
   1,457.88x = 1,748,101.50
5. Step 5: Solve for x
   x = 1,748,101.50/1,457.88
6. Step 6: Final answer
   x = 1,199.07