Finding the Fourth Proportional to 2,789.59, 4,184.42 and 709.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.59 : 4,184.42 = 709.60 : x
2. Step 2: Convert to fraction form
   2,789.59/4,184.42 = 709.60/x
3. Step 3: Cross multiply
   2,789.59x = 4,184.42 × 709.60
4. Step 4: Simplify right side
   2,789.59x = 2,969,262.67
5. Step 5: Solve for x
   x = 2,969,262.67/2,789.59
6. Step 6: Final answer
   x = 1,064.41