Finding the Fourth Proportional to 2,134.01, 3,198.50 and 816.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,134.01 : 3,198.50 = 816.89 : x
2. Step 2: Convert to fraction form
   2,134.01/3,198.50 = 816.89/x
3. Step 3: Cross multiply
   2,134.01x = 3,198.50 × 816.89
4. Step 4: Simplify right side
   2,134.01x = 2,612,822.67
5. Step 5: Solve for x
   x = 2,612,822.67/2,134.01
6. Step 6: Final answer
   x = 1,224.38