Finding the Fourth Proportional to 1,439.38, 2,147.83 and 1,383.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.38 : 2,147.83 = 1,383.22 : x
2. Step 2: Convert to fraction form
   1,439.38/2,147.83 = 1,383.22/x
3. Step 3: Cross multiply
   1,439.38x = 2,147.83 × 1,383.22
4. Step 4: Simplify right side
   1,439.38x = 2,970,914.50
5. Step 5: Solve for x
   x = 2,970,914.50/1,439.38
6. Step 6: Final answer
   x = 2,064.02