Finding the Fourth Proportional to 2,683.20, 3,706.90 and 2,145.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,683.20 : 3,706.90 = 2,145.98 : x
2. Step 2: Convert to fraction form
   2,683.20/3,706.90 = 2,145.98/x
3. Step 3: Cross multiply
   2,683.20x = 3,706.90 × 2,145.98
4. Step 4: Simplify right side
   2,683.20x = 7,954,933.26
5. Step 5: Solve for x
   x = 7,954,933.26/2,683.20
6. Step 6: Final answer
   x = 2,964.72