Finding the Fourth Proportional to 1,458.50, 2,011.82 and 868.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,458.50 : 2,011.82 = 868.64 : x
2. Step 2: Convert to fraction form
   1,458.50/2,011.82 = 868.64/x
3. Step 3: Cross multiply
   1,458.50x = 2,011.82 × 868.64
4. Step 4: Simplify right side
   1,458.50x = 1,747,547.32
5. Step 5: Solve for x
   x = 1,747,547.32/1,458.50
6. Step 6: Final answer
   x = 1,198.18