Finding the Fourth Proportional to 2,265.72, 3,398.98 and 1,169.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.72 : 3,398.98 = 1,169.78 : x
2. Step 2: Convert to fraction form
   2,265.72/3,398.98 = 1,169.78/x
3. Step 3: Cross multiply
   2,265.72x = 3,398.98 × 1,169.78
4. Step 4: Simplify right side
   2,265.72x = 3,976,058.82
5. Step 5: Solve for x
   x = 3,976,058.82/2,265.72
6. Step 6: Final answer
   x = 1,754.88