Finding the Fourth Proportional to 3,907.25, 5,856.55 and 1,715.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.25 : 5,856.55 = 1,715.69 : x
2. Step 2: Convert to fraction form
   3,907.25/5,856.55 = 1,715.69/x
3. Step 3: Cross multiply
   3,907.25x = 5,856.55 × 1,715.69
4. Step 4: Simplify right side
   3,907.25x = 10,048,024.27
5. Step 5: Solve for x
   x = 10,048,024.27/3,907.25
6. Step 6: Final answer
   x = 2,571.64