Finding the Fourth Proportional to 2,236.82, 3,086.78 and 1,242.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.82 : 3,086.78 = 1,242.03 : x
2. Step 2: Convert to fraction form
   2,236.82/3,086.78 = 1,242.03/x
3. Step 3: Cross multiply
   2,236.82x = 3,086.78 × 1,242.03
4. Step 4: Simplify right side
   2,236.82x = 3,833,889.21
5. Step 5: Solve for x
   x = 3,833,889.21/2,236.82
6. Step 6: Final answer
   x = 1,713.99