Finding the Fourth Proportional to 3,556.54, 5,334.78 and 1,091.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,556.54 : 5,334.78 = 1,091.35 : x
2. Step 2: Convert to fraction form
   3,556.54/5,334.78 = 1,091.35/x
3. Step 3: Cross multiply
   3,556.54x = 5,334.78 × 1,091.35
4. Step 4: Simplify right side
   3,556.54x = 5,822,112.15
5. Step 5: Solve for x
   x = 5,822,112.15/3,556.54
6. Step 6: Final answer
   x = 1,637.02