Finding the Fourth Proportional to 2,237.31, 3,087.63 and 1,242.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,237.31 : 3,087.63 = 1,242.60 : x
2. Step 2: Convert to fraction form
   2,237.31/3,087.63 = 1,242.60/x
3. Step 3: Cross multiply
   2,237.31x = 3,087.63 × 1,242.60
4. Step 4: Simplify right side
   2,237.31x = 3,836,667.39
5. Step 5: Solve for x
   x = 3,836,667.39/2,237.31
6. Step 6: Final answer
   x = 1,714.86