Finding the Fourth Proportional to 1,555.89, 2,147.13 and 892.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.89 : 2,147.13 = 892.73 : x
2. Step 2: Convert to fraction form
   1,555.89/2,147.13 = 892.73/x
3. Step 3: Cross multiply
   1,555.89x = 2,147.13 × 892.73
4. Step 4: Simplify right side
   1,555.89x = 1,916,796.63
5. Step 5: Solve for x
   x = 1,916,796.63/1,555.89
6. Step 6: Final answer
   x = 1,231.96