Finding the Fourth Proportional to 2,131.65, 3,194.52 and 1,611.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.65 : 3,194.52 = 1,611.23 : x
2. Step 2: Convert to fraction form
   2,131.65/3,194.52 = 1,611.23/x
3. Step 3: Cross multiply
   2,131.65x = 3,194.52 × 1,611.23
4. Step 4: Simplify right side
   2,131.65x = 5,147,090.49
5. Step 5: Solve for x
   x = 5,147,090.49/2,131.65
6. Step 6: Final answer
   x = 2,414.60