Finding the Fourth Proportional to 3,761.78, 5,191.38 and 2,083.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,761.78 : 5,191.38 = 2,083.28 : x
2. Step 2: Convert to fraction form
   3,761.78/5,191.38 = 2,083.28/x
3. Step 3: Cross multiply
   3,761.78x = 5,191.38 × 2,083.28
4. Step 4: Simplify right side
   3,761.78x = 10,815,072.17
5. Step 5: Solve for x
   x = 10,815,072.17/3,761.78
6. Step 6: Final answer
   x = 2,874.99