Finding the Fourth Proportional to 3,145.72, 4,340.82 and 1,819.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,145.72 : 4,340.82 = 1,819.51 : x
2. Step 2: Convert to fraction form
   3,145.72/4,340.82 = 1,819.51/x
3. Step 3: Cross multiply
   3,145.72x = 4,340.82 × 1,819.51
4. Step 4: Simplify right side
   3,145.72x = 7,898,185.79
5. Step 5: Solve for x
   x = 7,898,185.79/3,145.72
6. Step 6: Final answer
   x = 2,510.77