Finding the Fourth Proportional to 1,141.72, 1,575.72 and 676

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.72 : 1,575.72 = 676 : x
2. Step 2: Convert to fraction form
   1,141.72/1,575.72 = 676/x
3. Step 3: Cross multiply
   1,141.72x = 1,575.72 × 676
4. Step 4: Simplify right side
   1,141.72x = 1,065,186.72
5. Step 5: Solve for x
   x = 1,065,186.72/1,141.72
6. Step 6: Final answer
   x = 932.97