Finding the Fourth Proportional to 1,819.45, 2,508.30 and 1,538.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.45 : 2,508.30 = 1,538.56 : x
2. Step 2: Convert to fraction form
   1,819.45/2,508.30 = 1,538.56/x
3. Step 3: Cross multiply
   1,819.45x = 2,508.30 × 1,538.56
4. Step 4: Simplify right side
   1,819.45x = 3,859,179.67
5. Step 5: Solve for x
   x = 3,859,179.67/1,819.45
6. Step 6: Final answer
   x = 2,121.06