Finding the Fourth Proportional to 2,236.77, 3,086.61 and 1,242.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,236.77 : 3,086.61 = 1,242.03 : x
2. Step 2: Convert to fraction form
   2,236.77/3,086.61 = 1,242.03/x
3. Step 3: Cross multiply
   2,236.77x = 3,086.61 × 1,242.03
4. Step 4: Simplify right side
   2,236.77x = 3,833,662.22
5. Step 5: Solve for x
   x = 3,833,662.22/2,236.77
6. Step 6: Final answer
   x = 1,713.93