Finding the Fourth Proportional to 1,308.52, 1,805.50 and 866.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.52 : 1,805.50 = 866.16 : x
2. Step 2: Convert to fraction form
   1,308.52/1,805.50 = 866.16/x
3. Step 3: Cross multiply
   1,308.52x = 1,805.50 × 866.16
4. Step 4: Simplify right side
   1,308.52x = 1,563,851.88
5. Step 5: Solve for x
   x = 1,563,851.88/1,308.52
6. Step 6: Final answer
   x = 1,195.13