Finding the Fourth Proportional to 1,565.03, 2,159.72 and 866.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565.03 : 2,159.72 = 866.41 : x
2. Step 2: Convert to fraction form
   1,565.03/2,159.72 = 866.41/x
3. Step 3: Cross multiply
   1,565.03x = 2,159.72 × 866.41
4. Step 4: Simplify right side
   1,565.03x = 1,871,196.52
5. Step 5: Solve for x
   x = 1,871,196.52/1,565.03
6. Step 6: Final answer
   x = 1,195.63