Finding the Fourth Proportional to 2,100.22, 3,147.62 and 868.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.22 : 3,147.62 = 868.49 : x
2. Step 2: Convert to fraction form
   2,100.22/3,147.62 = 868.49/x
3. Step 3: Cross multiply
   2,100.22x = 3,147.62 × 868.49
4. Step 4: Simplify right side
   2,100.22x = 2,733,676.49
5. Step 5: Solve for x
   x = 2,733,676.49/2,100.22
6. Step 6: Final answer
   x = 1,301.61