Finding the Fourth Proportional to 2,555.35, 3,833.46 and 911.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.35 : 3,833.46 = 911.86 : x
2. Step 2: Convert to fraction form
   2,555.35/3,833.46 = 911.86/x
3. Step 3: Cross multiply
   2,555.35x = 3,833.46 × 911.86
4. Step 4: Simplify right side
   2,555.35x = 3,495,569.25
5. Step 5: Solve for x
   x = 3,495,569.25/2,555.35
6. Step 6: Final answer
   x = 1,367.94