Finding the Fourth Proportional to 1,819.38, 2,712.70 and 1,786.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.38 : 2,712.70 = 1,786.56 : x
2. Step 2: Convert to fraction form
   1,819.38/2,712.70 = 1,786.56/x
3. Step 3: Cross multiply
   1,819.38x = 2,712.70 × 1,786.56
4. Step 4: Simplify right side
   1,819.38x = 4,846,401.31
5. Step 5: Solve for x
   x = 4,846,401.31/1,819.38
6. Step 6: Final answer
   x = 2,663.77