Finding the Fourth Proportional to 2,773.55, 4,160.06 and 825.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.55 : 4,160.06 = 825.77 : x
2. Step 2: Convert to fraction form
   2,773.55/4,160.06 = 825.77/x
3. Step 3: Cross multiply
   2,773.55x = 4,160.06 × 825.77
4. Step 4: Simplify right side
   2,773.55x = 3,435,259.02
5. Step 5: Solve for x
   x = 3,435,259.02/2,773.55
6. Step 6: Final answer
   x = 1,238.58