Finding the Fourth Proportional to 2,123.23, 3,188.46 and 1,384.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.23 : 3,188.46 = 1,384.10 : x
2. Step 2: Convert to fraction form
   2,123.23/3,188.46 = 1,384.10/x
3. Step 3: Cross multiply
   2,123.23x = 3,188.46 × 1,384.10
4. Step 4: Simplify right side
   2,123.23x = 4,413,147.49
5. Step 5: Solve for x
   x = 4,413,147.49/2,123.23
6. Step 6: Final answer
   x = 2,078.51