Finding the Fourth Proportional to 3,072.42, 4,608.72 and 881.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,072.42 : 4,608.72 = 881.33 : x
2. Step 2: Convert to fraction form
   3,072.42/4,608.72 = 881.33/x
3. Step 3: Cross multiply
   3,072.42x = 4,608.72 × 881.33
4. Step 4: Simplify right side
   3,072.42x = 4,061,780.15
5. Step 5: Solve for x
   x = 4,061,780.15/3,072.42
6. Step 6: Final answer
   x = 1,322.01