Finding the Fourth Proportional to 2,715.81, 3,743.46 and 2,217.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,715.81 : 3,743.46 = 2,217.57 : x
2. Step 2: Convert to fraction form
   2,715.81/3,743.46 = 2,217.57/x
3. Step 3: Cross multiply
   2,715.81x = 3,743.46 × 2,217.57
4. Step 4: Simplify right side
   2,715.81x = 8,301,384.59
5. Step 5: Solve for x
   x = 8,301,384.59/2,715.81
6. Step 6: Final answer
   x = 3,056.69