Finding the Fourth Proportional to 3,123.10, 4,683.27 and 1,661.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.10 : 4,683.27 = 1,661.90 : x
2. Step 2: Convert to fraction form
   3,123.10/4,683.27 = 1,661.90/x
3. Step 3: Cross multiply
   3,123.10x = 4,683.27 × 1,661.90
4. Step 4: Simplify right side
   3,123.10x = 7,783,144.35
5. Step 5: Solve for x
   x = 7,783,144.35/3,123.10
6. Step 6: Final answer
   x = 2,492.12