Finding the Fourth Proportional to 2,124.32, 3,185.87 and 825.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.32 : 3,185.87 = 825.48 : x
2. Step 2: Convert to fraction form
   2,124.32/3,185.87 = 825.48/x
3. Step 3: Cross multiply
   2,124.32x = 3,185.87 × 825.48
4. Step 4: Simplify right side
   2,124.32x = 2,629,867.84
5. Step 5: Solve for x
   x = 2,629,867.84/2,124.32
6. Step 6: Final answer
   x = 1,237.98