Finding the Fourth Proportional to 3,900.95, 5,851.18 and 1,709.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.95 : 5,851.18 = 1,709.67 : x
2. Step 2: Convert to fraction form
   3,900.95/5,851.18 = 1,709.67/x
3. Step 3: Cross multiply
   3,900.95x = 5,851.18 × 1,709.67
4. Step 4: Simplify right side
   3,900.95x = 10,003,586.91
5. Step 5: Solve for x
   x = 10,003,586.91/3,900.95
6. Step 6: Final answer
   x = 2,564.40