Finding the Fourth Proportional to 2,683.86, 3,700.91 and 2,123.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,683.86 : 3,700.91 = 2,123.43 : x
2. Step 2: Convert to fraction form
   2,683.86/3,700.91 = 2,123.43/x
3. Step 3: Cross multiply
   2,683.86x = 3,700.91 × 2,123.43
4. Step 4: Simplify right side
   2,683.86x = 7,858,612.70
5. Step 5: Solve for x
   x = 7,858,612.70/2,683.86
6. Step 6: Final answer
   x = 2,928.10