Finding the Fourth Proportional to 3,450.78, 5,174.49 and 1,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,450.78 : 5,174.49 = 1,141.50 : x
2. Step 2: Convert to fraction form
   3,450.78/5,174.49 = 1,141.50/x
3. Step 3: Cross multiply
   3,450.78x = 5,174.49 × 1,141.50
4. Step 4: Simplify right side
   3,450.78x = 5,906,680.34
5. Step 5: Solve for x
   x = 5,906,680.34/3,450.78
6. Step 6: Final answer
   x = 1,711.69