Finding the Fourth Proportional to 3,622.54, 5,436.88 and 1,980.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,622.54 : 5,436.88 = 1,980.24 : x
2. Step 2: Convert to fraction form
   3,622.54/5,436.88 = 1,980.24/x
3. Step 3: Cross multiply
   3,622.54x = 5,436.88 × 1,980.24
4. Step 4: Simplify right side
   3,622.54x = 10,766,327.25
5. Step 5: Solve for x
   x = 10,766,327.25/3,622.54
6. Step 6: Final answer
   x = 2,972.04