Finding the Fourth Proportional to 1,544.81, 2,131.83 and 881.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.81 : 2,131.83 = 881.62 : x
2. Step 2: Convert to fraction form
   1,544.81/2,131.83 = 881.62/x
3. Step 3: Cross multiply
   1,544.81x = 2,131.83 × 881.62
4. Step 4: Simplify right side
   1,544.81x = 1,879,463.96
5. Step 5: Solve for x
   x = 1,879,463.96/1,544.81
6. Step 6: Final answer
   x = 1,216.63