Finding the Fourth Proportional to 2,123.50, 3,179.07 and 1,578.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.50 : 3,179.07 = 1,578.10 : x
2. Step 2: Convert to fraction form
   2,123.50/3,179.07 = 1,578.10/x
3. Step 3: Cross multiply
   2,123.50x = 3,179.07 × 1,578.10
4. Step 4: Simplify right side
   2,123.50x = 5,016,890.37
5. Step 5: Solve for x
   x = 5,016,890.37/2,123.50
6. Step 6: Final answer
   x = 2,362.56