Finding the Fourth Proportional to 1,223.82, 1,834.59 and 454.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.82 : 1,834.59 = 454.14 : x
2. Step 2: Convert to fraction form
   1,223.82/1,834.59 = 454.14/x
3. Step 3: Cross multiply
   1,223.82x = 1,834.59 × 454.14
4. Step 4: Simplify right side
   1,223.82x = 833,160.70
5. Step 5: Solve for x
   x = 833,160.70/1,223.82
6. Step 6: Final answer
   x = 680.79