Finding the Fourth Proportional to 3,947.43, 5,921.82 and 1,756.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.43 : 5,921.82 = 1,756.20 : x
2. Step 2: Convert to fraction form
   3,947.43/5,921.82 = 1,756.20/x
3. Step 3: Cross multiply
   3,947.43x = 5,921.82 × 1,756.20
4. Step 4: Simplify right side
   3,947.43x = 10,399,900.28
5. Step 5: Solve for x
   x = 10,399,900.28/3,947.43
6. Step 6: Final answer
   x = 2,634.60