Finding the Fourth Proportional to 1,456.16, 2,008.56 and 866.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.16 : 2,008.56 = 866.26 : x
2. Step 2: Convert to fraction form
   1,456.16/2,008.56 = 866.26/x
3. Step 3: Cross multiply
   1,456.16x = 2,008.56 × 866.26
4. Step 4: Simplify right side
   1,456.16x = 1,739,935.19
5. Step 5: Solve for x
   x = 1,739,935.19/1,456.16
6. Step 6: Final answer
   x = 1,194.88