Finding the Fourth Proportional to 2,238.61, 3,089.18 and 1,243.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.61 : 3,089.18 = 1,243.95 : x
2. Step 2: Convert to fraction form
   2,238.61/3,089.18 = 1,243.95/x
3. Step 3: Cross multiply
   2,238.61x = 3,089.18 × 1,243.95
4. Step 4: Simplify right side
   2,238.61x = 3,842,791.32
5. Step 5: Solve for x
   x = 3,842,791.32/2,238.61
6. Step 6: Final answer
   x = 1,716.60