Finding the Fourth Proportional to 1,085.98, 1,625.13 and 675.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.98 : 1,625.13 = 675.31 : x
2. Step 2: Convert to fraction form
   1,085.98/1,625.13 = 675.31/x
3. Step 3: Cross multiply
   1,085.98x = 1,625.13 × 675.31
4. Step 4: Simplify right side
   1,085.98x = 1,097,463.16
5. Step 5: Solve for x
   x = 1,097,463.16/1,085.98
6. Step 6: Final answer
   x = 1,010.57