Finding the Fourth Proportional to 2,760.55, 4,144.50 and 1,445.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.55 : 4,144.50 = 1,445.31 : x
2. Step 2: Convert to fraction form
   2,760.55/4,144.50 = 1,445.31/x
3. Step 3: Cross multiply
   2,760.55x = 4,144.50 × 1,445.31
4. Step 4: Simplify right side
   2,760.55x = 5,990,087.30
5. Step 5: Solve for x
   x = 5,990,087.30/2,760.55
6. Step 6: Final answer
   x = 2,169.89