Finding the Fourth Proportional to 2,141.55, 3,212.52 and 825.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.55 : 3,212.52 = 825.96 : x
2. Step 2: Convert to fraction form
   2,141.55/3,212.52 = 825.96/x
3. Step 3: Cross multiply
   2,141.55x = 3,212.52 × 825.96
4. Step 4: Simplify right side
   2,141.55x = 2,653,413.02
5. Step 5: Solve for x
   x = 2,653,413.02/2,141.55
6. Step 6: Final answer
   x = 1,239.02