Finding the Fourth Proportional to 2,236.73, 3,086.72 and 1,242.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.73 : 3,086.72 = 1,242.07 : x
2. Step 2: Convert to fraction form
   2,236.73/3,086.72 = 1,242.07/x
3. Step 3: Cross multiply
   2,236.73x = 3,086.72 × 1,242.07
4. Step 4: Simplify right side
   2,236.73x = 3,833,922.31
5. Step 5: Solve for x
   x = 3,833,922.31/2,236.73
6. Step 6: Final answer
   x = 1,714.07