Finding the Fourth Proportional to 3,920.55, 5,880.42 and 1,323.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.55 : 5,880.42 = 1,323.42 : x
2. Step 2: Convert to fraction form
   3,920.55/5,880.42 = 1,323.42/x
3. Step 3: Cross multiply
   3,920.55x = 5,880.42 × 1,323.42
4. Step 4: Simplify right side
   3,920.55x = 7,782,265.44
5. Step 5: Solve for x
   x = 7,782,265.44/3,920.55
6. Step 6: Final answer
   x = 1,984.99