Finding the Fourth Proportional to 2,265.17, 3,398.36 and 1,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.17 : 3,398.36 = 1,224.72 : x
2. Step 2: Convert to fraction form
   2,265.17/3,398.36 = 1,224.72/x
3. Step 3: Cross multiply
   2,265.17x = 3,398.36 × 1,224.72
4. Step 4: Simplify right side
   2,265.17x = 4,162,033.34
5. Step 5: Solve for x
   x = 4,162,033.34/2,265.17
6. Step 6: Final answer
   x = 1,837.41