Finding the Fourth Proportional to 3,047.59, 4,205.86 and 1,721.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,047.59 : 4,205.86 = 1,721.42 : x
2. Step 2: Convert to fraction form
   3,047.59/4,205.86 = 1,721.42/x
3. Step 3: Cross multiply
   3,047.59x = 4,205.86 × 1,721.42
4. Step 4: Simplify right side
   3,047.59x = 7,240,041.96
5. Step 5: Solve for x
   x = 7,240,041.96/3,047.59
6. Step 6: Final answer
   x = 2,375.66