Finding the Fourth Proportional to 1,443.06, 2,168.24 and 1,399.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.06 : 2,168.24 = 1,399.32 : x
2. Step 2: Convert to fraction form
   1,443.06/2,168.24 = 1,399.32/x
3. Step 3: Cross multiply
   1,443.06x = 2,168.24 × 1,399.32
4. Step 4: Simplify right side
   1,443.06x = 3,034,054.60
5. Step 5: Solve for x
   x = 3,034,054.60/1,443.06
6. Step 6: Final answer
   x = 2,102.51