Finding the Fourth Proportional to 1,556.56, 2,147.32 and 926.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,556.56 : 2,147.32 = 926.73 : x
2. Step 2: Convert to fraction form
   1,556.56/2,147.32 = 926.73/x
3. Step 3: Cross multiply
   1,556.56x = 2,147.32 × 926.73
4. Step 4: Simplify right side
   1,556.56x = 1,989,987.02
5. Step 5: Solve for x
   x = 1,989,987.02/1,556.56
6. Step 6: Final answer
   x = 1,278.45