Finding the Fourth Proportional to 1,065.27, 1,595.77 and 545.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065.27 : 1,595.77 = 545.25 : x
2. Step 2: Convert to fraction form
   1,065.27/1,595.77 = 545.25/x
3. Step 3: Cross multiply
   1,065.27x = 1,595.77 × 545.25
4. Step 4: Simplify right side
   1,065.27x = 870,093.59
5. Step 5: Solve for x
   x = 870,093.59/1,065.27
6. Step 6: Final answer
   x = 816.78