Finding the Fourth Proportional to 2,884.74, 3,978.90 and 2,000.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,884.74 : 3,978.90 = 2,000.82 : x
2. Step 2: Convert to fraction form
   2,884.74/3,978.90 = 2,000.82/x
3. Step 3: Cross multiply
   2,884.74x = 3,978.90 × 2,000.82
4. Step 4: Simplify right side
   2,884.74x = 7,961,062.70
5. Step 5: Solve for x
   x = 7,961,062.70/2,884.74
6. Step 6: Final answer
   x = 2,759.72