Finding the Fourth Proportional to 2,979.59, 4,111.41 and 1,720.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.59 : 4,111.41 = 1,720.45 : x
2. Step 2: Convert to fraction form
   2,979.59/4,111.41 = 1,720.45/x
3. Step 3: Cross multiply
   2,979.59x = 4,111.41 × 1,720.45
4. Step 4: Simplify right side
   2,979.59x = 7,073,454.78
5. Step 5: Solve for x
   x = 7,073,454.78/2,979.59
6. Step 6: Final answer
   x = 2,373.97