Finding the Fourth Proportional to 3,456.85, 4,770.54 and 2,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.85 : 4,770.54 = 2,131.42 : x
2. Step 2: Convert to fraction form
   3,456.85/4,770.54 = 2,131.42/x
3. Step 3: Cross multiply
   3,456.85x = 4,770.54 × 2,131.42
4. Step 4: Simplify right side
   3,456.85x = 10,168,024.37
5. Step 5: Solve for x
   x = 10,168,024.37/3,456.85
6. Step 6: Final answer
   x = 2,941.41