Finding the Fourth Proportional to 2,174.96, 3,001.37 and 1,290.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,174.96 : 3,001.37 = 1,290.24 : x
2. Step 2: Convert to fraction form
   2,174.96/3,001.37 = 1,290.24/x
3. Step 3: Cross multiply
   2,174.96x = 3,001.37 × 1,290.24
4. Step 4: Simplify right side
   2,174.96x = 3,872,481.18
5. Step 5: Solve for x
   x = 3,872,481.18/2,174.96
6. Step 6: Final answer
   x = 1,780.49