Finding the Fourth Proportional to 3,492.72, 4,819.86 and 1,920.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,492.72 : 4,819.86 = 1,920.83 : x
2. Step 2: Convert to fraction form
   3,492.72/4,819.86 = 1,920.83/x
3. Step 3: Cross multiply
   3,492.72x = 4,819.86 × 1,920.83
4. Step 4: Simplify right side
   3,492.72x = 9,258,107.58
5. Step 5: Solve for x
   x = 9,258,107.58/3,492.72
6. Step 6: Final answer
   x = 2,650.69