Finding the Fourth Proportional to 2,009.30, 3,012.19 and 1,131.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.30 : 3,012.19 = 1,131.73 : x
2. Step 2: Convert to fraction form
   2,009.30/3,012.19 = 1,131.73/x
3. Step 3: Cross multiply
   2,009.30x = 3,012.19 × 1,131.73
4. Step 4: Simplify right side
   2,009.30x = 3,408,975.43
5. Step 5: Solve for x
   x = 3,408,975.43/2,009.30
6. Step 6: Final answer
   x = 1,696.60