Finding the Fourth Proportional to 2,238.08, 3,088.74 and 1,243.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.08 : 3,088.74 = 1,243.40 : x
2. Step 2: Convert to fraction form
   2,238.08/3,088.74 = 1,243.40/x
3. Step 3: Cross multiply
   2,238.08x = 3,088.74 × 1,243.40
4. Step 4: Simplify right side
   2,238.08x = 3,840,539.32
5. Step 5: Solve for x
   x = 3,840,539.32/2,238.08
6. Step 6: Final answer
   x = 1,716.00