Finding the Fourth Proportional to 2,279.34, 3,418.98 and 1,109.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.34 : 3,418.98 = 1,109.16 : x
2. Step 2: Convert to fraction form
   2,279.34/3,418.98 = 1,109.16/x
3. Step 3: Cross multiply
   2,279.34x = 3,418.98 × 1,109.16
4. Step 4: Simplify right side
   2,279.34x = 3,792,195.86
5. Step 5: Solve for x
   x = 3,792,195.86/2,279.34
6. Step 6: Final answer
   x = 1,663.73