Finding the Fourth Proportional to 2,139.02, 3,206.33 and 822.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.02 : 3,206.33 = 822.41 : x
2. Step 2: Convert to fraction form
   2,139.02/3,206.33 = 822.41/x
3. Step 3: Cross multiply
   2,139.02x = 3,206.33 × 822.41
4. Step 4: Simplify right side
   2,139.02x = 2,636,917.86
5. Step 5: Solve for x
   x = 2,636,917.86/2,139.02
6. Step 6: Final answer
   x = 1,232.77