Finding the Fourth Proportional to 2,124.50, 3,171.81 and 1,816.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.50 : 3,171.81 = 1,816.46 : x
2. Step 2: Convert to fraction form
   2,124.50/3,171.81 = 1,816.46/x
3. Step 3: Cross multiply
   2,124.50x = 3,171.81 × 1,816.46
4. Step 4: Simplify right side
   2,124.50x = 5,761,465.99
5. Step 5: Solve for x
   x = 5,761,465.99/2,124.50
6. Step 6: Final answer
   x = 2,711.92