Finding the Fourth Proportional to 2,123.32, 3,188.57 and 1,384.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.32 : 3,188.57 = 1,384.18 : x
2. Step 2: Convert to fraction form
   2,123.32/3,188.57 = 1,384.18/x
3. Step 3: Cross multiply
   2,123.32x = 3,188.57 × 1,384.18
4. Step 4: Simplify right side
   2,123.32x = 4,413,557.87
5. Step 5: Solve for x
   x = 4,413,557.87/2,123.32
6. Step 6: Final answer
   x = 2,078.61