Finding the Fourth Proportional to 1,308.73, 1,806.05 and 719.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.73 : 1,806.05 = 719.27 : x
2. Step 2: Convert to fraction form
   1,308.73/1,806.05 = 719.27/x
3. Step 3: Cross multiply
   1,308.73x = 1,806.05 × 719.27
4. Step 4: Simplify right side
   1,308.73x = 1,299,037.58
5. Step 5: Solve for x
   x = 1,299,037.58/1,308.73
6. Step 6: Final answer
   x = 992.59