Finding the Fourth Proportional to 3,300.78, 4,951.33 and 835.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,300.78 : 4,951.33 = 835.63 : x
2. Step 2: Convert to fraction form
   3,300.78/4,951.33 = 835.63/x
3. Step 3: Cross multiply
   3,300.78x = 4,951.33 × 835.63
4. Step 4: Simplify right side
   3,300.78x = 4,137,479.89
5. Step 5: Solve for x
   x = 4,137,479.89/3,300.78
6. Step 6: Final answer
   x = 1,253.49