Finding the Fourth Proportional to 1,157.54, 1,597.52 and 685.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157.54 : 1,597.52 = 685.58 : x
2. Step 2: Convert to fraction form
   1,157.54/1,597.52 = 685.58/x
3. Step 3: Cross multiply
   1,157.54x = 1,597.52 × 685.58
4. Step 4: Simplify right side
   1,157.54x = 1,095,227.76
5. Step 5: Solve for x
   x = 1,095,227.76/1,157.54
6. Step 6: Final answer
   x = 946.17