Finding the Fourth Proportional to 2,239.00, 3,086.53 and 1,399.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,239.00 : 3,086.53 = 1,399.32 : x
2. Step 2: Convert to fraction form
   2,239.00/3,086.53 = 1,399.32/x
3. Step 3: Cross multiply
   2,239.00x = 3,086.53 × 1,399.32
4. Step 4: Simplify right side
   2,239.00x = 4,319,039.66
5. Step 5: Solve for x
   x = 4,319,039.66/2,239.00
6. Step 6: Final answer
   x = 1,929.01