Finding the Fourth Proportional to 2,656.82, 3,985.28 and 709.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.82 : 3,985.28 = 709.30 : x
2. Step 2: Convert to fraction form
   2,656.82/3,985.28 = 709.30/x
3. Step 3: Cross multiply
   2,656.82x = 3,985.28 × 709.30
4. Step 4: Simplify right side
   2,656.82x = 2,826,759.10
5. Step 5: Solve for x
   x = 2,826,759.10/2,656.82
6. Step 6: Final answer
   x = 1,063.96