Finding the Fourth Proportional to 1,308.82, 1,806.17 and 719.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.82 : 1,806.17 = 719.39 : x
2. Step 2: Convert to fraction form
   1,308.82/1,806.17 = 719.39/x
3. Step 3: Cross multiply
   1,308.82x = 1,806.17 × 719.39
4. Step 4: Simplify right side
   1,308.82x = 1,299,337.04
5. Step 5: Solve for x
   x = 1,299,337.04/1,308.82
6. Step 6: Final answer
   x = 992.76