Finding the Fourth Proportional to 1,308.61, 1,805.99 and 719.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.61 : 1,805.99 = 719.27 : x
2. Step 2: Convert to fraction form
   1,308.61/1,805.99 = 719.27/x
3. Step 3: Cross multiply
   1,308.61x = 1,805.99 × 719.27
4. Step 4: Simplify right side
   1,308.61x = 1,298,994.43
5. Step 5: Solve for x
   x = 1,298,994.43/1,308.61
6. Step 6: Final answer
   x = 992.65