Finding the Fourth Proportional to 1,146.46, 1,718.72 and 452.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.46 : 1,718.72 = 452.82 : x
2. Step 2: Convert to fraction form
   1,146.46/1,718.72 = 452.82/x
3. Step 3: Cross multiply
   1,146.46x = 1,718.72 × 452.82
4. Step 4: Simplify right side
   1,146.46x = 778,270.79
5. Step 5: Solve for x
   x = 778,270.79/1,146.46
6. Step 6: Final answer
   x = 678.85