Finding the Fourth Proportional to 2,237.29, 3,087.42 and 1,242.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,237.29 : 3,087.42 = 1,242.55 : x
2. Step 2: Convert to fraction form
   2,237.29/3,087.42 = 1,242.55/x
3. Step 3: Cross multiply
   2,237.29x = 3,087.42 × 1,242.55
4. Step 4: Simplify right side
   2,237.29x = 3,836,273.72
5. Step 5: Solve for x
   x = 3,836,273.72/2,237.29
6. Step 6: Final answer
   x = 1,714.70