Finding the Fourth Proportional to 3,684.69, 5,083.56 and 2,111.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.69 : 5,083.56 = 2,111.87 : x
2. Step 2: Convert to fraction form
   3,684.69/5,083.56 = 2,111.87/x
3. Step 3: Cross multiply
   3,684.69x = 5,083.56 × 2,111.87
4. Step 4: Simplify right side
   3,684.69x = 10,735,830.57
5. Step 5: Solve for x
   x = 10,735,830.57/3,684.69
6. Step 6: Final answer
   x = 2,913.63