Finding the Fourth Proportional to 1,052.71, 1,454.55 and 866.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,052.71 : 1,454.55 = 866.07 : x
2. Step 2: Convert to fraction form
   1,052.71/1,454.55 = 866.07/x
3. Step 3: Cross multiply
   1,052.71x = 1,454.55 × 866.07
4. Step 4: Simplify right side
   1,052.71x = 1,259,742.12
5. Step 5: Solve for x
   x = 1,259,742.12/1,052.71
6. Step 6: Final answer
   x = 1,196.67