Finding the Fourth Proportional to 1,556.01, 2,147.31 and 892.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.01 : 2,147.31 = 892.89 : x
2. Step 2: Convert to fraction form
   1,556.01/2,147.31 = 892.89/x
3. Step 3: Cross multiply
   1,556.01x = 2,147.31 × 892.89
4. Step 4: Simplify right side
   1,556.01x = 1,917,311.63
5. Step 5: Solve for x
   x = 1,917,311.63/1,556.01
6. Step 6: Final answer
   x = 1,232.20