Finding the Fourth Proportional to 1,085.59, 1,628.58 and 536.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.59 : 1,628.58 = 536.41 : x
2. Step 2: Convert to fraction form
   1,085.59/1,628.58 = 536.41/x
3. Step 3: Cross multiply
   1,085.59x = 1,628.58 × 536.41
4. Step 4: Simplify right side
   1,085.59x = 873,586.60
5. Step 5: Solve for x
   x = 873,586.60/1,085.59
6. Step 6: Final answer
   x = 804.71