Finding the Fourth Proportional to 2,980.48, 4,112.71 and 1,721.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.48 : 4,112.71 = 1,721.52 : x
2. Step 2: Convert to fraction form
   2,980.48/4,112.71 = 1,721.52/x
3. Step 3: Cross multiply
   2,980.48x = 4,112.71 × 1,721.52
4. Step 4: Simplify right side
   2,980.48x = 7,080,112.52
5. Step 5: Solve for x
   x = 7,080,112.52/2,980.48
6. Step 6: Final answer
   x = 2,375.49