Finding the Fourth Proportional to 2,980.08, 4,112.46 and 1,721.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.08 : 4,112.46 = 1,721.12 : x
2. Step 2: Convert to fraction form
   2,980.08/4,112.46 = 1,721.12/x
3. Step 3: Cross multiply
   2,980.08x = 4,112.46 × 1,721.12
4. Step 4: Simplify right side
   2,980.08x = 7,078,016.59
5. Step 5: Solve for x
   x = 7,078,016.59/2,980.08
6. Step 6: Final answer
   x = 2,375.11