Finding the Fourth Proportional to 3,947.74, 5,917.56 and 1,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,947.74 : 5,917.56 = 1,757.50 : x
2. Step 2: Convert to fraction form
   3,947.74/5,917.56 = 1,757.50/x
3. Step 3: Cross multiply
   3,947.74x = 5,917.56 × 1,757.50
4. Step 4: Simplify right side
   3,947.74x = 10,400,111.70
5. Step 5: Solve for x
   x = 10,400,111.70/3,947.74
6. Step 6: Final answer
   x = 2,634.45