Finding the Fourth Proportional to 1,443.21, 2,160.75 and 1,200.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.21 : 2,160.75 = 1,200.61 : x
2. Step 2: Convert to fraction form
   1,443.21/2,160.75 = 1,200.61/x
3. Step 3: Cross multiply
   1,443.21x = 2,160.75 × 1,200.61
4. Step 4: Simplify right side
   1,443.21x = 2,594,218.06
5. Step 5: Solve for x
   x = 2,594,218.06/1,443.21
6. Step 6: Final answer
   x = 1,797.53