Finding the Fourth Proportional to 2,131.52, 3,198.51 and 898.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.52 : 3,198.51 = 898.85 : x
2. Step 2: Convert to fraction form
   2,131.52/3,198.51 = 898.85/x
3. Step 3: Cross multiply
   2,131.52x = 3,198.51 × 898.85
4. Step 4: Simplify right side
   2,131.52x = 2,874,964.72
5. Step 5: Solve for x
   x = 2,874,964.72/2,131.52
6. Step 6: Final answer
   x = 1,348.79