Finding the Fourth Proportional to 2,131.41, 3,191.21 and 1,609.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.41 : 3,191.21 = 1,609.84 : x
2. Step 2: Convert to fraction form
   2,131.41/3,191.21 = 1,609.84/x
3. Step 3: Cross multiply
   2,131.41x = 3,191.21 × 1,609.84
4. Step 4: Simplify right side
   2,131.41x = 5,137,313.50
5. Step 5: Solve for x
   x = 5,137,313.50/2,131.41
6. Step 6: Final answer
   x = 2,410.29