Finding the Fourth Proportional to 2,656.86, 3,984.89 and 709.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656.86 : 3,984.89 = 709.22 : x
2. Step 2: Convert to fraction form
   2,656.86/3,984.89 = 709.22/x
3. Step 3: Cross multiply
   2,656.86x = 3,984.89 × 709.22
4. Step 4: Simplify right side
   2,656.86x = 2,826,140.22
5. Step 5: Solve for x
   x = 2,826,140.22/2,656.86
6. Step 6: Final answer
   x = 1,063.71