Finding the Fourth Proportional to 3,684.89, 5,085.38 and 2,113.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.89 : 5,085.38 = 2,113.49 : x
2. Step 2: Convert to fraction form
   3,684.89/5,085.38 = 2,113.49/x
3. Step 3: Cross multiply
   3,684.89x = 5,085.38 × 2,113.49
4. Step 4: Simplify right side
   3,684.89x = 10,747,889.21
5. Step 5: Solve for x
   x = 10,747,889.21/3,684.89
6. Step 6: Final answer
   x = 2,916.75