Finding the Fourth Proportional to 2,130.73, 3,196.54 and 898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,130.73 : 3,196.54 = 898.72 : x
2. Step 2: Convert to fraction form
   2,130.73/3,196.54 = 898.72/x
3. Step 3: Cross multiply
   2,130.73x = 3,196.54 × 898.72
4. Step 4: Simplify right side
   2,130.73x = 2,872,787.56
5. Step 5: Solve for x
   x = 2,872,787.56/2,130.73
6. Step 6: Final answer
   x = 1,348.27