Finding the Fourth Proportional to 3,578.27, 4,938.17 and 2,085.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.27 : 4,938.17 = 2,085.98 : x
2. Step 2: Convert to fraction form
   3,578.27/4,938.17 = 2,085.98/x
3. Step 3: Cross multiply
   3,578.27x = 4,938.17 × 2,085.98
4. Step 4: Simplify right side
   3,578.27x = 10,300,888.74
5. Step 5: Solve for x
   x = 10,300,888.74/3,578.27
6. Step 6: Final answer
   x = 2,878.74