Finding the Fourth Proportional to 1,085.31, 1,627.38 and 564.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.31 : 1,627.38 = 564.03 : x
2. Step 2: Convert to fraction form
   1,085.31/1,627.38 = 564.03/x
3. Step 3: Cross multiply
   1,085.31x = 1,627.38 × 564.03
4. Step 4: Simplify right side
   1,085.31x = 917,891.14
5. Step 5: Solve for x
   x = 917,891.14/1,085.31
6. Step 6: Final answer
   x = 845.74