Finding the Fourth Proportional to 2,144.70, 2,959.47 and 1,200.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.70 : 2,959.47 = 1,200.43 : x
2. Step 2: Convert to fraction form
   2,144.70/2,959.47 = 1,200.43/x
3. Step 3: Cross multiply
   2,144.70x = 2,959.47 × 1,200.43
4. Step 4: Simplify right side
   2,144.70x = 3,552,636.57
5. Step 5: Solve for x
   x = 3,552,636.57/2,144.70
6. Step 6: Final answer
   x = 1,656.47