Finding the Fourth Proportional to 3,690.78, 5,537.82 and 1,959

Step by Step Solution

1. Step 1: Write the proportion equation
   3,690.78 : 5,537.82 = 1,959 : x
2. Step 2: Convert to fraction form
   3,690.78/5,537.82 = 1,959/x
3. Step 3: Cross multiply
   3,690.78x = 5,537.82 × 1,959
4. Step 4: Simplify right side
   3,690.78x = 10,848,589.38
5. Step 5: Solve for x
   x = 10,848,589.38/3,690.78
6. Step 6: Final answer
   x = 2,939.38