Finding the Fourth Proportional to 2,123.62, 3,179.47 and 1,601.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.62 : 3,179.47 = 1,601.98 : x
2. Step 2: Convert to fraction form
   2,123.62/3,179.47 = 1,601.98/x
3. Step 3: Cross multiply
   2,123.62x = 3,179.47 × 1,601.98
4. Step 4: Simplify right side
   2,123.62x = 5,093,438.40
5. Step 5: Solve for x
   x = 5,093,438.40/2,123.62
6. Step 6: Final answer
   x = 2,398.47