Finding the Fourth Proportional to 1,014.89, 1,522.55 and 321.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,014.89 : 1,522.55 = 321.76 : x
2. Step 2: Convert to fraction form
   1,014.89/1,522.55 = 321.76/x
3. Step 3: Cross multiply
   1,014.89x = 1,522.55 × 321.76
4. Step 4: Simplify right side
   1,014.89x = 489,895.69
5. Step 5: Solve for x
   x = 489,895.69/1,014.89
6. Step 6: Final answer
   x = 482.71