Finding the Fourth Proportional to 1,627.05, 2,245.30 and 881.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.05 : 2,245.30 = 881.00 : x
2. Step 2: Convert to fraction form
   1,627.05/2,245.30 = 881.00/x
3. Step 3: Cross multiply
   1,627.05x = 2,245.30 × 881.00
4. Step 4: Simplify right side
   1,627.05x = 1,978,116.01
5. Step 5: Solve for x
   x = 1,978,116.01/1,627.05
6. Step 6: Final answer
   x = 1,215.77