Finding the Fourth Proportional to 2,503.92, 3,453.12 and 1,620.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,503.92 : 3,453.12 = 1,620.48 : x
2. Step 2: Convert to fraction form
   2,503.92/3,453.12 = 1,620.48/x
3. Step 3: Cross multiply
   2,503.92x = 3,453.12 × 1,620.48
4. Step 4: Simplify right side
   2,503.92x = 5,595,711.90
5. Step 5: Solve for x
   x = 5,595,711.90/2,503.92
6. Step 6: Final answer
   x = 2,234.78