Finding the Fourth Proportional to 2,520.35, 3,478 and 1,443.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.35 : 3,478 = 1,443.58 : x
2. Step 2: Convert to fraction form
   2,520.35/3,478 = 1,443.58/x
3. Step 3: Cross multiply
   2,520.35x = 3,478 × 1,443.58
4. Step 4: Simplify right side
   2,520.35x = 5,020,771.24
5. Step 5: Solve for x
   x = 5,020,771.24/2,520.35
6. Step 6: Final answer
   x = 1,992.09