Finding the Fourth Proportional to 6,499.59, 9,748.82 and 1,819.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.59 : 9,748.82 = 1,819.20 : x
2. Step 2: Convert to fraction form
   6,499.59/9,748.82 = 1,819.20/x
3. Step 3: Cross multiply
   6,499.59x = 9,748.82 × 1,819.20
4. Step 4: Simplify right side
   6,499.59x = 17,735,044.25
5. Step 5: Solve for x
   x = 17,735,044.25/6,499.59
6. Step 6: Final answer
   x = 2,728.64