Finding the Fourth Proportional to 1,544.39, 2,131.24 and 836.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.39 : 2,131.24 = 836.23 : x
2. Step 2: Convert to fraction form
   1,544.39/2,131.24 = 836.23/x
3. Step 3: Cross multiply
   1,544.39x = 2,131.24 × 836.23
4. Step 4: Simplify right side
   1,544.39x = 1,782,206.83
5. Step 5: Solve for x
   x = 1,782,206.83/1,544.39
6. Step 6: Final answer
   x = 1,153.99