Finding the Fourth Proportional to 2,823.52, 4,234.72 and 771.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,823.52 : 4,234.72 = 771.04 : x
2. Step 2: Convert to fraction form
   2,823.52/4,234.72 = 771.04/x
3. Step 3: Cross multiply
   2,823.52x = 4,234.72 × 771.04
4. Step 4: Simplify right side
   2,823.52x = 3,265,138.51
5. Step 5: Solve for x
   x = 3,265,138.51/2,823.52
6. Step 6: Final answer
   x = 1,156.41