Finding the Fourth Proportional to 1,819.59, 2,730.08 and 1,089.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.59 : 2,730.08 = 1,089.69 : x
2. Step 2: Convert to fraction form
   1,819.59/2,730.08 = 1,089.69/x
3. Step 3: Cross multiply
   1,819.59x = 2,730.08 × 1,089.69
4. Step 4: Simplify right side
   1,819.59x = 2,974,940.88
5. Step 5: Solve for x
   x = 2,974,940.88/1,819.59
6. Step 6: Final answer
   x = 1,634.95