Finding the Fourth Proportional to 2,330.57, 3,513.72 and 2,171.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.57 : 3,513.72 = 2,171.96 : x
2. Step 2: Convert to fraction form
   2,330.57/3,513.72 = 2,171.96/x
3. Step 3: Cross multiply
   2,330.57x = 3,513.72 × 2,171.96
4. Step 4: Simplify right side
   2,330.57x = 7,631,648.43
5. Step 5: Solve for x
   x = 7,631,648.43/2,330.57
6. Step 6: Final answer
   x = 3,274.58