Finding the Fourth Proportional to 2,123.19, 3,188.38 and 1,384.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.19 : 3,188.38 = 1,384.06 : x
2. Step 2: Convert to fraction form
   2,123.19/3,188.38 = 1,384.06/x
3. Step 3: Cross multiply
   2,123.19x = 3,188.38 × 1,384.06
4. Step 4: Simplify right side
   2,123.19x = 4,412,909.22
5. Step 5: Solve for x
   x = 4,412,909.22/2,123.19
6. Step 6: Final answer
   x = 2,078.43