Finding the Fourth Proportional to 1,555.82, 2,147.24 and 892.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,555.82 : 2,147.24 = 892.55 : x
2. Step 2: Convert to fraction form
   1,555.82/2,147.24 = 892.55/x
3. Step 3: Cross multiply
   1,555.82x = 2,147.24 × 892.55
4. Step 4: Simplify right side
   1,555.82x = 1,916,503.86
5. Step 5: Solve for x
   x = 1,916,503.86/1,555.82
6. Step 6: Final answer
   x = 1,231.83