Finding the Fourth Proportional to 1,789.01, 2,680.55 and 1,266.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.01 : 2,680.55 = 1,266.43 : x
2. Step 2: Convert to fraction form
   1,789.01/2,680.55 = 1,266.43/x
3. Step 3: Cross multiply
   1,789.01x = 2,680.55 × 1,266.43
4. Step 4: Simplify right side
   1,789.01x = 3,394,728.94
5. Step 5: Solve for x
   x = 3,394,728.94/1,789.01
6. Step 6: Final answer
   x = 1,897.55