Finding the Fourth Proportional to 1,064.22, 1,595.55 and 716.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.22 : 1,595.55 = 716.69 : x
2. Step 2: Convert to fraction form
   1,064.22/1,595.55 = 716.69/x
3. Step 3: Cross multiply
   1,064.22x = 1,595.55 × 716.69
4. Step 4: Simplify right side
   1,064.22x = 1,143,506.75
5. Step 5: Solve for x
   x = 1,143,506.75/1,064.22
6. Step 6: Final answer
   x = 1,074.50