Finding the Fourth Proportional to 2,052.10, 2,831.88 and 1,212.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,052.10 : 2,831.88 = 1,212.82 : x
2. Step 2: Convert to fraction form
   2,052.10/2,831.88 = 1,212.82/x
3. Step 3: Cross multiply
   2,052.10x = 2,831.88 × 1,212.82
4. Step 4: Simplify right side
   2,052.10x = 3,434,560.70
5. Step 5: Solve for x
   x = 3,434,560.70/2,052.10
6. Step 6: Final answer
   x = 1,673.68