Finding the Fourth Proportional to 1,555.22, 2,146.24 and 892.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.22 : 2,146.24 = 892.28 : x
2. Step 2: Convert to fraction form
   1,555.22/2,146.24 = 892.28/x
3. Step 3: Cross multiply
   1,555.22x = 2,146.24 × 892.28
4. Step 4: Simplify right side
   1,555.22x = 1,915,047.03
5. Step 5: Solve for x
   x = 1,915,047.03/1,555.22
6. Step 6: Final answer
   x = 1,231.37