Finding the Fourth Proportional to 2,131.96, 3,196.40 and 898.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.96 : 3,196.40 = 898.69 : x
2. Step 2: Convert to fraction form
   2,131.96/3,196.40 = 898.69/x
3. Step 3: Cross multiply
   2,131.96x = 3,196.40 × 898.69
4. Step 4: Simplify right side
   2,131.96x = 2,872,575.21
5. Step 5: Solve for x
   x = 2,872,575.21/2,131.96
6. Step 6: Final answer
   x = 1,347.39