Finding the Fourth Proportional to 1,819.91, 2,732.17 and 1,515.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.91 : 2,732.17 = 1,515.49 : x
2. Step 2: Convert to fraction form
   1,819.91/2,732.17 = 1,515.49/x
3. Step 3: Cross multiply
   1,819.91x = 2,732.17 × 1,515.49
4. Step 4: Simplify right side
   1,819.91x = 4,140,562.65
5. Step 5: Solve for x
   x = 4,140,562.65/1,819.91
6. Step 6: Final answer
   x = 2,275.15