Finding the Fourth Proportional to 1,152.72, 1,728.90 and 536.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.72 : 1,728.90 = 536.22 : x
2. Step 2: Convert to fraction form
   1,152.72/1,728.90 = 536.22/x
3. Step 3: Cross multiply
   1,152.72x = 1,728.90 × 536.22
4. Step 4: Simplify right side
   1,152.72x = 927,070.76
5. Step 5: Solve for x
   x = 927,070.76/1,152.72
6. Step 6: Final answer
   x = 804.25