Finding the Fourth Proportional to 3,003.04, 4,146.72 and 2,120.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,003.04 : 4,146.72 = 2,120.80 : x
2. Step 2: Convert to fraction form
   3,003.04/4,146.72 = 2,120.80/x
3. Step 3: Cross multiply
   3,003.04x = 4,146.72 × 2,120.80
4. Step 4: Simplify right side
   3,003.04x = 8,794,363.78
5. Step 5: Solve for x
   x = 8,794,363.78/3,003.04
6. Step 6: Final answer
   x = 2,928.49