Finding the Fourth Proportional to 2,545.59, 3,819.69 and 1,929.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.59 : 3,819.69 = 1,929.09 : x
2. Step 2: Convert to fraction form
   2,545.59/3,819.69 = 1,929.09/x
3. Step 3: Cross multiply
   2,545.59x = 3,819.69 × 1,929.09
4. Step 4: Simplify right side
   2,545.59x = 7,368,525.78
5. Step 5: Solve for x
   x = 7,368,525.78/2,545.59
6. Step 6: Final answer
   x = 2,894.62