Finding the Fourth Proportional to 2,144.95, 2,959.72 and 1,200.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.95 : 2,959.72 = 1,200.69 : x
2. Step 2: Convert to fraction form
   2,144.95/2,959.72 = 1,200.69/x
3. Step 3: Cross multiply
   2,144.95x = 2,959.72 × 1,200.69
4. Step 4: Simplify right side
   2,144.95x = 3,553,703.21
5. Step 5: Solve for x
   x = 3,553,703.21/2,144.95
6. Step 6: Final answer
   x = 1,656.78