Finding the Fourth Proportional to 3,522.42, 5,280.53 and 1,329.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.42 : 5,280.53 = 1,329.55 : x
2. Step 2: Convert to fraction form
   3,522.42/5,280.53 = 1,329.55/x
3. Step 3: Cross multiply
   3,522.42x = 5,280.53 × 1,329.55
4. Step 4: Simplify right side
   3,522.42x = 7,020,708.81
5. Step 5: Solve for x
   x = 7,020,708.81/3,522.42
6. Step 6: Final answer
   x = 1,993.15