Finding the Fourth Proportional to 2,683.61, 3,700.56 and 2,123.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,683.61 : 3,700.56 = 2,123.18 : x
2. Step 2: Convert to fraction form
   2,683.61/3,700.56 = 2,123.18/x
3. Step 3: Cross multiply
   2,683.61x = 3,700.56 × 2,123.18
4. Step 4: Simplify right side
   2,683.61x = 7,856,954.98
5. Step 5: Solve for x
   x = 7,856,954.98/2,683.61
6. Step 6: Final answer
   x = 2,927.76