Finding the Fourth Proportional to 2,385.74, 3,578.72 and 1,968.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.74 : 3,578.72 = 1,968.49 : x
2. Step 2: Convert to fraction form
   2,385.74/3,578.72 = 1,968.49/x
3. Step 3: Cross multiply
   2,385.74x = 3,578.72 × 1,968.49
4. Step 4: Simplify right side
   2,385.74x = 7,044,684.77
5. Step 5: Solve for x
   x = 7,044,684.77/2,385.74
6. Step 6: Final answer
   x = 2,952.83