Finding the Fourth Proportional to 2,144.28, 2,959.02 and 1,200.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.28 : 2,959.02 = 1,200.09 : x
2. Step 2: Convert to fraction form
   2,144.28/2,959.02 = 1,200.09/x
3. Step 3: Cross multiply
   2,144.28x = 2,959.02 × 1,200.09
4. Step 4: Simplify right side
   2,144.28x = 3,551,090.31
5. Step 5: Solve for x
   x = 3,551,090.31/2,144.28
6. Step 6: Final answer
   x = 1,656.08