Finding the Fourth Proportional to 2,168.82, 3,253.10 and 1,242.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,168.82 : 3,253.10 = 1,242.05 : x
2. Step 2: Convert to fraction form
   2,168.82/3,253.10 = 1,242.05/x
3. Step 3: Cross multiply
   2,168.82x = 3,253.10 × 1,242.05
4. Step 4: Simplify right side
   2,168.82x = 4,040,490.38
5. Step 5: Solve for x
   x = 4,040,490.38/2,168.82
6. Step 6: Final answer
   x = 1,862.99