Finding the Fourth Proportional to 2,558.43, 3,530.60 and 1,424.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.43 : 3,530.60 = 1,424.09 : x
2. Step 2: Convert to fraction form
   2,558.43/3,530.60 = 1,424.09/x
3. Step 3: Cross multiply
   2,558.43x = 3,530.60 × 1,424.09
4. Step 4: Simplify right side
   2,558.43x = 5,027,893.86
5. Step 5: Solve for x
   x = 5,027,893.86/2,558.43
6. Step 6: Final answer
   x = 1,965.23