Finding the Fourth Proportional to 1,982.08, 2,968.86 and 1,286.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,982.08 : 2,968.86 = 1,286.72 : x
2. Step 2: Convert to fraction form
   1,982.08/2,968.86 = 1,286.72/x
3. Step 3: Cross multiply
   1,982.08x = 2,968.86 × 1,286.72
4. Step 4: Simplify right side
   1,982.08x = 3,820,091.54
5. Step 5: Solve for x
   x = 3,820,091.54/1,982.08
6. Step 6: Final answer
   x = 1,927.31