Finding the Fourth Proportional to 6,499.64, 9,749.16 and 1,819.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.64 : 9,749.16 = 1,819.31 : x
2. Step 2: Convert to fraction form
   6,499.64/9,749.16 = 1,819.31/x
3. Step 3: Cross multiply
   6,499.64x = 9,749.16 × 1,819.31
4. Step 4: Simplify right side
   6,499.64x = 17,736,750.37
5. Step 5: Solve for x
   x = 17,736,750.37/6,499.64
6. Step 6: Final answer
   x = 2,728.88