Finding the Fourth Proportional to 3,650.76, 5,478.30 and 1,919.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,650.76 : 5,478.30 = 1,919.52 : x
2. Step 2: Convert to fraction form
   3,650.76/5,478.30 = 1,919.52/x
3. Step 3: Cross multiply
   3,650.76x = 5,478.30 × 1,919.52
4. Step 4: Simplify right side
   3,650.76x = 10,515,706.42
5. Step 5: Solve for x
   x = 10,515,706.42/3,650.76
6. Step 6: Final answer
   x = 2,880.42