Finding the Fourth Proportional to 1,228.34, 1,839.54 and 740.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228.34 : 1,839.54 = 740.18 : x
2. Step 2: Convert to fraction form
   1,228.34/1,839.54 = 740.18/x
3. Step 3: Cross multiply
   1,228.34x = 1,839.54 × 740.18
4. Step 4: Simplify right side
   1,228.34x = 1,361,590.72
5. Step 5: Solve for x
   x = 1,361,590.72/1,228.34
6. Step 6: Final answer
   x = 1,108.48