Finding the Fourth Proportional to 2,300.24, 3,174.30 and 1,638.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.24 : 3,174.30 = 1,638.21 : x
2. Step 2: Convert to fraction form
   2,300.24/3,174.30 = 1,638.21/x
3. Step 3: Cross multiply
   2,300.24x = 3,174.30 × 1,638.21
4. Step 4: Simplify right side
   2,300.24x = 5,200,170.00
5. Step 5: Solve for x
   x = 5,200,170.00/2,300.24
6. Step 6: Final answer
   x = 2,260.71