Finding the Fourth Proportional to 3,683.25, 5,082.87 and 2,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,683.25 : 5,082.87 = 2,111.31 : x
2. Step 2: Convert to fraction form
   3,683.25/5,082.87 = 2,111.31/x
3. Step 3: Cross multiply
   3,683.25x = 5,082.87 × 2,111.31
4. Step 4: Simplify right side
   3,683.25x = 10,731,514.26
5. Step 5: Solve for x
   x = 10,731,514.26/3,683.25
6. Step 6: Final answer
   x = 2,913.60