Finding the Fourth Proportional to 1,504.83, 2,256.09 and 911.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,504.83 : 2,256.09 = 911.72 : x
2. Step 2: Convert to fraction form
   1,504.83/2,256.09 = 911.72/x
3. Step 3: Cross multiply
   1,504.83x = 2,256.09 × 911.72
4. Step 4: Simplify right side
   1,504.83x = 2,056,922.37
5. Step 5: Solve for x
   x = 2,056,922.37/1,504.83
6. Step 6: Final answer
   x = 1,366.88