Finding the Fourth Proportional to 3,081.33, 4,623.82 and 1,620.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,081.33 : 4,623.82 = 1,620.60 : x
2. Step 2: Convert to fraction form
   3,081.33/4,623.82 = 1,620.60/x
3. Step 3: Cross multiply
   3,081.33x = 4,623.82 × 1,620.60
4. Step 4: Simplify right side
   3,081.33x = 7,493,362.69
5. Step 5: Solve for x
   x = 7,493,362.69/3,081.33
6. Step 6: Final answer
   x = 2,431.86