Finding the Fourth Proportional to 1,146.71, 1,718.89 and 452.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.71 : 1,718.89 = 452.42 : x
2. Step 2: Convert to fraction form
   1,146.71/1,718.89 = 452.42/x
3. Step 3: Cross multiply
   1,146.71x = 1,718.89 × 452.42
4. Step 4: Simplify right side
   1,146.71x = 777,650.49
5. Step 5: Solve for x
   x = 777,650.49/1,146.71
6. Step 6: Final answer
   x = 678.16