Finding the Fourth Proportional to 1,544.42, 2,131.31 and 881.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.42 : 2,131.31 = 881.48 : x
2. Step 2: Convert to fraction form
   1,544.42/2,131.31 = 881.48/x
3. Step 3: Cross multiply
   1,544.42x = 2,131.31 × 881.48
4. Step 4: Simplify right side
   1,544.42x = 1,878,707.14
5. Step 5: Solve for x
   x = 1,878,707.14/1,544.42
6. Step 6: Final answer
   x = 1,216.45