Finding the Fourth Proportional to 1,085.05, 1,627.48 and 537.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.05 : 1,627.48 = 537.59 : x
2. Step 2: Convert to fraction form
   1,085.05/1,627.48 = 537.59/x
3. Step 3: Cross multiply
   1,085.05x = 1,627.48 × 537.59
4. Step 4: Simplify right side
   1,085.05x = 874,918.69
5. Step 5: Solve for x
   x = 874,918.69/1,085.05
6. Step 6: Final answer
   x = 806.34