Finding the Fourth Proportional to 1,458.28, 2,012.24 and 868.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.28 : 2,012.24 = 868.96 : x
2. Step 2: Convert to fraction form
   1,458.28/2,012.24 = 868.96/x
3. Step 3: Cross multiply
   1,458.28x = 2,012.24 × 868.96
4. Step 4: Simplify right side
   1,458.28x = 1,748,556.07
5. Step 5: Solve for x
   x = 1,748,556.07/1,458.28
6. Step 6: Final answer
   x = 1,199.05