Finding the Fourth Proportional to 1,144.33, 1,580.01 and 881.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.33 : 1,580.01 = 881.89 : x
2. Step 2: Convert to fraction form
   1,144.33/1,580.01 = 881.89/x
3. Step 3: Cross multiply
   1,144.33x = 1,580.01 × 881.89
4. Step 4: Simplify right side
   1,144.33x = 1,393,387.76
5. Step 5: Solve for x
   x = 1,393,387.76/1,144.33
6. Step 6: Final answer
   x = 1,217.65