Finding the Fourth Proportional to 1,308.52, 1,805.64 and 719.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.52 : 1,805.64 = 719.08 : x
2. Step 2: Convert to fraction form
   1,308.52/1,805.64 = 719.08/x
3. Step 3: Cross multiply
   1,308.52x = 1,805.64 × 719.08
4. Step 4: Simplify right side
   1,308.52x = 1,298,399.61
5. Step 5: Solve for x
   x = 1,298,399.61/1,308.52
6. Step 6: Final answer
   x = 992.27