Finding the Fourth Proportional to 1,544.72, 2,131.69 and 881.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.72 : 2,131.69 = 881.56 : x
2. Step 2: Convert to fraction form
   1,544.72/2,131.69 = 881.56/x
3. Step 3: Cross multiply
   1,544.72x = 2,131.69 × 881.56
4. Step 4: Simplify right side
   1,544.72x = 1,879,212.64
5. Step 5: Solve for x
   x = 1,879,212.64/1,544.72
6. Step 6: Final answer
   x = 1,216.54