Finding the Fourth Proportional to 1,308.00, 1,805.03 and 718.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.00 : 1,805.03 = 718.57 : x
2. Step 2: Convert to fraction form
   1,308.00/1,805.03 = 718.57/x
3. Step 3: Cross multiply
   1,308.00x = 1,805.03 × 718.57
4. Step 4: Simplify right side
   1,308.00x = 1,297,034.10
5. Step 5: Solve for x
   x = 1,297,034.10/1,308.00
6. Step 6: Final answer
   x = 991.62