Finding the Fourth Proportional to 1,627.21, 2,245.55 and 881.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.21 : 2,245.55 = 881.18 : x
2. Step 2: Convert to fraction form
   1,627.21/2,245.55 = 881.18/x
3. Step 3: Cross multiply
   1,627.21x = 2,245.55 × 881.18
4. Step 4: Simplify right side
   1,627.21x = 1,978,729.01
5. Step 5: Solve for x
   x = 1,978,729.01/1,627.21
6. Step 6: Final answer
   x = 1,216.02