Finding the Fourth Proportional to 1,830.30, 2,743.16 and 789.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,830.30 : 2,743.16 = 789.12 : x
2. Step 2: Convert to fraction form
   1,830.30/2,743.16 = 789.12/x
3. Step 3: Cross multiply
   1,830.30x = 2,743.16 × 789.12
4. Step 4: Simplify right side
   1,830.30x = 2,164,682.42
5. Step 5: Solve for x
   x = 2,164,682.42/1,830.30
6. Step 6: Final answer
   x = 1,182.69