Finding the Fourth Proportional to 1,544.58, 2,131.57 and 881.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.58 : 2,131.57 = 881.42 : x
2. Step 2: Convert to fraction form
   1,544.58/2,131.57 = 881.42/x
3. Step 3: Cross multiply
   1,544.58x = 2,131.57 × 881.42
4. Step 4: Simplify right side
   1,544.58x = 1,878,808.43
5. Step 5: Solve for x
   x = 1,878,808.43/1,544.58
6. Step 6: Final answer
   x = 1,216.39