Finding the Fourth Proportional to 2,233.98, 3,348.90 and 772.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,233.98 : 3,348.90 = 772.79 : x
2. Step 2: Convert to fraction form
   2,233.98/3,348.90 = 772.79/x
3. Step 3: Cross multiply
   2,233.98x = 3,348.90 × 772.79
4. Step 4: Simplify right side
   2,233.98x = 2,587,996.43
5. Step 5: Solve for x
   x = 2,587,996.43/2,233.98
6. Step 6: Final answer
   x = 1,158.47