Finding the Fourth Proportional to 1,285.33, 1,773.39 and 866.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.33 : 1,773.39 = 866.16 : x
2. Step 2: Convert to fraction form
   1,285.33/1,773.39 = 866.16/x
3. Step 3: Cross multiply
   1,285.33x = 1,773.39 × 866.16
4. Step 4: Simplify right side
   1,285.33x = 1,536,030.72
5. Step 5: Solve for x
   x = 1,536,030.72/1,285.33
6. Step 6: Final answer
   x = 1,195.05