Finding the Fourth Proportional to 2,279.31, 3,419.10 and 719.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.31 : 3,419.10 = 719.36 : x
2. Step 2: Convert to fraction form
   2,279.31/3,419.10 = 719.36/x
3. Step 3: Cross multiply
   2,279.31x = 3,419.10 × 719.36
4. Step 4: Simplify right side
   2,279.31x = 2,459,572.32
5. Step 5: Solve for x
   x = 2,459,572.32/2,279.31
6. Step 6: Final answer
   x = 1,079.09