Finding the Fourth Proportional to 2,980.02, 4,112.34 and 1,721.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,980.02 : 4,112.34 = 1,721.10 : x
2. Step 2: Convert to fraction form
   2,980.02/4,112.34 = 1,721.10/x
3. Step 3: Cross multiply
   2,980.02x = 4,112.34 × 1,721.10
4. Step 4: Simplify right side
   2,980.02x = 7,077,748.37
5. Step 5: Solve for x
   x = 7,077,748.37/2,980.02
6. Step 6: Final answer
   x = 2,375.07