Finding the Fourth Proportional to 2,174.83, 3,001.23 and 1,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174.83 : 3,001.23 = 1,217.72 : x
2. Step 2: Convert to fraction form
   2,174.83/3,001.23 = 1,217.72/x
3. Step 3: Cross multiply
   2,174.83x = 3,001.23 × 1,217.72
4. Step 4: Simplify right side
   2,174.83x = 3,654,665.30
5. Step 5: Solve for x
   x = 3,654,665.30/2,174.83
6. Step 6: Final answer
   x = 1,680.44