Finding the Fourth Proportional to 2,143.02, 2,955.51 and 1,443.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.02 : 2,955.51 = 1,443.18 : x
2. Step 2: Convert to fraction form
   2,143.02/2,955.51 = 1,443.18/x
3. Step 3: Cross multiply
   2,143.02x = 2,955.51 × 1,443.18
4. Step 4: Simplify right side
   2,143.02x = 4,265,332.92
5. Step 5: Solve for x
   x = 4,265,332.92/2,143.02
6. Step 6: Final answer
   x = 1,990.34