Finding the Fourth Proportional to 2,565.37, 3,540.12 and 1,621.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,565.37 : 3,540.12 = 1,621.67 : x
2. Step 2: Convert to fraction form
   2,565.37/3,540.12 = 1,621.67/x
3. Step 3: Cross multiply
   2,565.37x = 3,540.12 × 1,621.67
4. Step 4: Simplify right side
   2,565.37x = 5,740,906.40
5. Step 5: Solve for x
   x = 5,740,906.40/2,565.37
6. Step 6: Final answer
   x = 2,237.85