Finding the Fourth Proportional to 2,555.18, 3,832.52 and 911.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.18 : 3,832.52 = 911.58 : x
2. Step 2: Convert to fraction form
   2,555.18/3,832.52 = 911.58/x
3. Step 3: Cross multiply
   2,555.18x = 3,832.52 × 911.58
4. Step 4: Simplify right side
   2,555.18x = 3,493,648.58
5. Step 5: Solve for x
   x = 3,493,648.58/2,555.18
6. Step 6: Final answer
   x = 1,367.28