Finding the Fourth Proportional to 3,401.70, 5,105.28 and 1,758.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.70 : 5,105.28 = 1,758.73 : x
2. Step 2: Convert to fraction form
   3,401.70/5,105.28 = 1,758.73/x
3. Step 3: Cross multiply
   3,401.70x = 5,105.28 × 1,758.73
4. Step 4: Simplify right side
   3,401.70x = 8,978,783.57
5. Step 5: Solve for x
   x = 8,978,783.57/3,401.70
6. Step 6: Final answer
   x = 2,639.50