Finding the Fourth Proportional to 1,086.16, 1,626.52 and 536.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.16 : 1,626.52 = 536.56 : x
2. Step 2: Convert to fraction form
   1,086.16/1,626.52 = 536.56/x
3. Step 3: Cross multiply
   1,086.16x = 1,626.52 × 536.56
4. Step 4: Simplify right side
   1,086.16x = 872,725.57
5. Step 5: Solve for x
   x = 872,725.57/1,086.16
6. Step 6: Final answer
   x = 803.50