Finding the Fourth Proportional to 1,146.04, 1,718.52 and 415.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.04 : 1,718.52 = 415.42 : x
2. Step 2: Convert to fraction form
   1,146.04/1,718.52 = 415.42/x
3. Step 3: Cross multiply
   1,146.04x = 1,718.52 × 415.42
4. Step 4: Simplify right side
   1,146.04x = 713,907.58
5. Step 5: Solve for x
   x = 713,907.58/1,146.04
6. Step 6: Final answer
   x = 622.93