Finding the Fourth Proportional to 891.72, 1,227.83 and 758.70

Step by Step Solution

1. Step 1: Write the proportion equation
   891.72 : 1,227.83 = 758.70 : x
2. Step 2: Convert to fraction form
   891.72/1,227.83 = 758.70/x
3. Step 3: Cross multiply
   891.72x = 1,227.83 × 758.70
4. Step 4: Simplify right side
   891.72x = 931,550.83
5. Step 5: Solve for x
   x = 931,550.83/891.72
6. Step 6: Final answer
   x = 1,044.67