Finding the Fourth Proportional to 1,544.72, 2,131.69 and 836.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.72 : 2,131.69 = 836.56 : x
2. Step 2: Convert to fraction form
   1,544.72/2,131.69 = 836.56/x
3. Step 3: Cross multiply
   1,544.72x = 2,131.69 × 836.56
4. Step 4: Simplify right side
   1,544.72x = 1,783,286.59
5. Step 5: Solve for x
   x = 1,783,286.59/1,544.72
6. Step 6: Final answer
   x = 1,154.44