Finding the Fourth Proportional to 2,454.86, 3,675.06 and 1,620.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,454.86 : 3,675.06 = 1,620.39 : x
2. Step 2: Convert to fraction form
   2,454.86/3,675.06 = 1,620.39/x
3. Step 3: Cross multiply
   2,454.86x = 3,675.06 × 1,620.39
4. Step 4: Simplify right side
   2,454.86x = 5,955,023.58
5. Step 5: Solve for x
   x = 5,955,023.58/2,454.86
6. Step 6: Final answer
   x = 2,425.81