Finding the Fourth Proportional to 2,108.50, 3,163.86 and 1,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.50 : 3,163.86 = 1,082.50 : x
2. Step 2: Convert to fraction form
   2,108.50/3,163.86 = 1,082.50/x
3. Step 3: Cross multiply
   2,108.50x = 3,163.86 × 1,082.50
4. Step 4: Simplify right side
   2,108.50x = 3,424,878.45
5. Step 5: Solve for x
   x = 3,424,878.45/2,108.50
6. Step 6: Final answer
   x = 1,624.32