Finding the Fourth Proportional to 1,595.69, 2,391.81 and 772.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,595.69 : 2,391.81 = 772.22 : x
2. Step 2: Convert to fraction form
   1,595.69/2,391.81 = 772.22/x
3. Step 3: Cross multiply
   1,595.69x = 2,391.81 × 772.22
4. Step 4: Simplify right side
   1,595.69x = 1,847,003.52
5. Step 5: Solve for x
   x = 1,847,003.52/1,595.69
6. Step 6: Final answer
   x = 1,157.50