Finding the Fourth Proportional to 1,627.25, 2,245.61 and 881.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.25 : 2,245.61 = 881.22 : x
2. Step 2: Convert to fraction form
   1,627.25/2,245.61 = 881.22/x
3. Step 3: Cross multiply
   1,627.25x = 2,245.61 × 881.22
4. Step 4: Simplify right side
   1,627.25x = 1,978,876.44
5. Step 5: Solve for x
   x = 1,978,876.44/1,627.25
6. Step 6: Final answer
   x = 1,216.09