Finding the Fourth Proportional to 1,789.30, 2,683.82 and 911.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.30 : 2,683.82 = 911.25 : x
2. Step 2: Convert to fraction form
   1,789.30/2,683.82 = 911.25/x
3. Step 3: Cross multiply
   1,789.30x = 2,683.82 × 911.25
4. Step 4: Simplify right side
   1,789.30x = 2,445,626.42
5. Step 5: Solve for x
   x = 2,445,626.42/1,789.30
6. Step 6: Final answer
   x = 1,366.81