Finding the Fourth Proportional to 858.37, 1,181.84 and 757.31

Step by Step Solution

1. Step 1: Write the proportion equation
   858.37 : 1,181.84 = 757.31 : x
2. Step 2: Convert to fraction form
   858.37/1,181.84 = 757.31/x
3. Step 3: Cross multiply
   858.37x = 1,181.84 × 757.31
4. Step 4: Simplify right side
   858.37x = 895,019.25
5. Step 5: Solve for x
   x = 895,019.25/858.37
6. Step 6: Final answer
   x = 1,042.70