Finding the Fourth Proportional to 3,578.18, 5,363.50 and 1,934.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.18 : 5,363.50 = 1,934.28 : x
2. Step 2: Convert to fraction form
   3,578.18/5,363.50 = 1,934.28/x
3. Step 3: Cross multiply
   3,578.18x = 5,363.50 × 1,934.28
4. Step 4: Simplify right side
   3,578.18x = 10,374,510.78
5. Step 5: Solve for x
   x = 10,374,510.78/3,578.18
6. Step 6: Final answer
   x = 2,899.38