Finding the Fourth Proportional to 1,308.82, 1,806.18 and 719.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.82 : 1,806.18 = 719.38 : x
2. Step 2: Convert to fraction form
   1,308.82/1,806.18 = 719.38/x
3. Step 3: Cross multiply
   1,308.82x = 1,806.18 × 719.38
4. Step 4: Simplify right side
   1,308.82x = 1,299,329.77
5. Step 5: Solve for x
   x = 1,299,329.77/1,308.82
6. Step 6: Final answer
   x = 992.75