Finding the Fourth Proportional to 1,819.34, 2,728.86 and 723.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,819.34 : 2,728.86 = 723.41 : x
2. Step 2: Convert to fraction form
   1,819.34/2,728.86 = 723.41/x
3. Step 3: Cross multiply
   1,819.34x = 2,728.86 × 723.41
4. Step 4: Simplify right side
   1,819.34x = 1,974,091.43
5. Step 5: Solve for x
   x = 1,974,091.43/1,819.34
6. Step 6: Final answer
   x = 1,085.06