Finding the Fourth Proportional to 2,238.76, 3,356.94 and 1,142.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.76 : 3,356.94 = 1,142.68 : x
2. Step 2: Convert to fraction form
   2,238.76/3,356.94 = 1,142.68/x
3. Step 3: Cross multiply
   2,238.76x = 3,356.94 × 1,142.68
4. Step 4: Simplify right side
   2,238.76x = 3,835,908.20
5. Step 5: Solve for x
   x = 3,835,908.20/2,238.76
6. Step 6: Final answer
   x = 1,713.41