Finding the Fourth Proportional to 1,064.89, 1,597.69 and 545.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.89 : 1,597.69 = 545.03 : x
2. Step 2: Convert to fraction form
   1,064.89/1,597.69 = 545.03/x
3. Step 3: Cross multiply
   1,064.89x = 1,597.69 × 545.03
4. Step 4: Simplify right side
   1,064.89x = 870,786.26
5. Step 5: Solve for x
   x = 870,786.26/1,064.89
6. Step 6: Final answer
   x = 817.72