Finding the Fourth Proportional to 1,308.71, 1,806.06 and 719.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.71 : 1,806.06 = 719.29 : x
2. Step 2: Convert to fraction form
   1,308.71/1,806.06 = 719.29/x
3. Step 3: Cross multiply
   1,308.71x = 1,806.06 × 719.29
4. Step 4: Simplify right side
   1,308.71x = 1,299,080.90
5. Step 5: Solve for x
   x = 1,299,080.90/1,308.71
6. Step 6: Final answer
   x = 992.64