Finding the Fourth Proportional to 2,385.25, 3,578.72 and 1,068.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.25 : 3,578.72 = 1,068.90 : x
2. Step 2: Convert to fraction form
   2,385.25/3,578.72 = 1,068.90/x
3. Step 3: Cross multiply
   2,385.25x = 3,578.72 × 1,068.90
4. Step 4: Simplify right side
   2,385.25x = 3,825,293.81
5. Step 5: Solve for x
   x = 3,825,293.81/2,385.25
6. Step 6: Final answer
   x = 1,603.73