Finding the Fourth Proportional to 1,085.01, 1,625.47 and 536.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.01 : 1,625.47 = 536.55 : x
2. Step 2: Convert to fraction form
   1,085.01/1,625.47 = 536.55/x
3. Step 3: Cross multiply
   1,085.01x = 1,625.47 × 536.55
4. Step 4: Simplify right side
   1,085.01x = 872,145.93
5. Step 5: Solve for x
   x = 872,145.93/1,085.01
6. Step 6: Final answer
   x = 803.81