Finding the Fourth Proportional to 1,308.48, 1,805.71 and 719.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.48 : 1,805.71 = 719.02 : x
2. Step 2: Convert to fraction form
   1,308.48/1,805.71 = 719.02/x
3. Step 3: Cross multiply
   1,308.48x = 1,805.71 × 719.02
4. Step 4: Simplify right side
   1,308.48x = 1,298,341.60
5. Step 5: Solve for x
   x = 1,298,341.60/1,308.48
6. Step 6: Final answer
   x = 992.25