Finding the Fourth Proportional to 2,539.55, 3,504.52 and 1,420.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,539.55 : 3,504.52 = 1,420.54 : x
2. Step 2: Convert to fraction form
   2,539.55/3,504.52 = 1,420.54/x
3. Step 3: Cross multiply
   2,539.55x = 3,504.52 × 1,420.54
4. Step 4: Simplify right side
   2,539.55x = 4,978,310.43
5. Step 5: Solve for x
   x = 4,978,310.43/2,539.55
6. Step 6: Final answer
   x = 1,960.31