Finding the Fourth Proportional to 1,544.45, 2,131.39 and 881.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,544.45 : 2,131.39 = 881.48 : x
2. Step 2: Convert to fraction form
   1,544.45/2,131.39 = 881.48/x
3. Step 3: Cross multiply
   1,544.45x = 2,131.39 × 881.48
4. Step 4: Simplify right side
   1,544.45x = 1,878,762.59
5. Step 5: Solve for x
   x = 1,878,762.59/1,544.45
6. Step 6: Final answer
   x = 1,216.46