Finding the Fourth Proportional to 1,068.56, 1,603.61 and 452.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.56 : 1,603.61 = 452.44 : x
2. Step 2: Convert to fraction form
   1,068.56/1,603.61 = 452.44/x
3. Step 3: Cross multiply
   1,068.56x = 1,603.61 × 452.44
4. Step 4: Simplify right side
   1,068.56x = 725,537.31
5. Step 5: Solve for x
   x = 725,537.31/1,068.56
6. Step 6: Final answer
   x = 678.99