Finding the Fourth Proportional to 2,708.72, 4,061.70 and 1,322.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,708.72 : 4,061.70 = 1,322.12 : x
2. Step 2: Convert to fraction form
   2,708.72/4,061.70 = 1,322.12/x
3. Step 3: Cross multiply
   2,708.72x = 4,061.70 × 1,322.12
4. Step 4: Simplify right side
   2,708.72x = 5,370,054.80
5. Step 5: Solve for x
   x = 5,370,054.80/2,708.72
6. Step 6: Final answer
   x = 1,982.51