Finding the Fourth Proportional to 2,071.12, 2,856.72 and 1,982.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.12 : 2,856.72 = 1,982.56 : x
2. Step 2: Convert to fraction form
   2,071.12/2,856.72 = 1,982.56/x
3. Step 3: Cross multiply
   2,071.12x = 2,856.72 × 1,982.56
4. Step 4: Simplify right side
   2,071.12x = 5,663,618.80
5. Step 5: Solve for x
   x = 5,663,618.80/2,071.12
6. Step 6: Final answer
   x = 2,734.57