Finding the Fourth Proportional to 1,789.76, 2,685.71 and 866.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.76 : 2,685.71 = 866.27 : x
2. Step 2: Convert to fraction form
   1,789.76/2,685.71 = 866.27/x
3. Step 3: Cross multiply
   1,789.76x = 2,685.71 × 866.27
4. Step 4: Simplify right side
   1,789.76x = 2,326,558.88
5. Step 5: Solve for x
   x = 2,326,558.88/1,789.76
6. Step 6: Final answer
   x = 1,299.93