Finding the Fourth Proportional to 3,456.99, 4,770.59 and 3,174.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.99 : 4,770.59 = 3,174.57 : x
2. Step 2: Convert to fraction form
   3,456.99/4,770.59 = 3,174.57/x
3. Step 3: Cross multiply
   3,456.99x = 4,770.59 × 3,174.57
4. Step 4: Simplify right side
   3,456.99x = 15,144,556.02
5. Step 5: Solve for x
   x = 15,144,556.02/3,456.99
6. Step 6: Final answer
   x = 4,380.85