Finding the Fourth Proportional to 1,308.33, 1,805.49 and 718.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.33 : 1,805.49 = 718.89 : x
2. Step 2: Convert to fraction form
   1,308.33/1,805.49 = 718.89/x
3. Step 3: Cross multiply
   1,308.33x = 1,805.49 × 718.89
4. Step 4: Simplify right side
   1,308.33x = 1,297,948.71
5. Step 5: Solve for x
   x = 1,297,948.71/1,308.33
6. Step 6: Final answer
   x = 992.07