Finding the Fourth Proportional to 3,683.92, 5,084.40 and 2,112.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,683.92 : 5,084.40 = 2,112.16 : x
2. Step 2: Convert to fraction form
   3,683.92/5,084.40 = 2,112.16/x
3. Step 3: Cross multiply
   3,683.92x = 5,084.40 × 2,112.16
4. Step 4: Simplify right side
   3,683.92x = 10,739,066.30
5. Step 5: Solve for x
   x = 10,739,066.30/3,683.92
6. Step 6: Final answer
   x = 2,915.12