Finding the Fourth Proportional to 2,124.07, 3,187.73 and 824.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.07 : 3,187.73 = 824.83 : x
2. Step 2: Convert to fraction form
   2,124.07/3,187.73 = 824.83/x
3. Step 3: Cross multiply
   2,124.07x = 3,187.73 × 824.83
4. Step 4: Simplify right side
   2,124.07x = 2,629,335.34
5. Step 5: Solve for x
   x = 2,629,335.34/2,124.07
6. Step 6: Final answer
   x = 1,237.88