Finding the Fourth Proportional to 3,450.72, 5,171.46 and 1,970.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,450.72 : 5,171.46 = 1,970.39 : x
2. Step 2: Convert to fraction form
   3,450.72/5,171.46 = 1,970.39/x
3. Step 3: Cross multiply
   3,450.72x = 5,171.46 × 1,970.39
4. Step 4: Simplify right side
   3,450.72x = 10,189,809.69
5. Step 5: Solve for x
   x = 10,189,809.69/3,450.72
6. Step 6: Final answer
   x = 2,952.95