Finding the Fourth Proportional to 2,189.81, 3,284.79 and 709.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.81 : 3,284.79 = 709.00 : x
2. Step 2: Convert to fraction form
   2,189.81/3,284.79 = 709.00/x
3. Step 3: Cross multiply
   2,189.81x = 3,284.79 × 709.00
4. Step 4: Simplify right side
   2,189.81x = 2,328,899.69
5. Step 5: Solve for x
   x = 2,328,899.69/2,189.81
6. Step 6: Final answer
   x = 1,063.52