Finding the Fourth Proportional to 2,236.61, 3,086.71 and 1,242.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.61 : 3,086.71 = 1,242.24 : x
2. Step 2: Convert to fraction form
   2,236.61/3,086.71 = 1,242.24/x
3. Step 3: Cross multiply
   2,236.61x = 3,086.71 × 1,242.24
4. Step 4: Simplify right side
   2,236.61x = 3,834,419.95
5. Step 5: Solve for x
   x = 3,834,419.95/2,236.61
6. Step 6: Final answer
   x = 1,714.39