Finding the Fourth Proportional to 2,238.02, 3,088.48 and 1,243.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.02 : 3,088.48 = 1,243.30 : x
2. Step 2: Convert to fraction form
   2,238.02/3,088.48 = 1,243.30/x
3. Step 3: Cross multiply
   2,238.02x = 3,088.48 × 1,243.30
4. Step 4: Simplify right side
   2,238.02x = 3,839,907.18
5. Step 5: Solve for x
   x = 3,839,907.18/2,238.02
6. Step 6: Final answer
   x = 1,715.76