Finding the Fourth Proportional to 1,064.80, 1,467.57 and 877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.80 : 1,467.57 = 877.15 : x
2. Step 2: Convert to fraction form
   1,064.80/1,467.57 = 877.15/x
3. Step 3: Cross multiply
   1,064.80x = 1,467.57 × 877.15
4. Step 4: Simplify right side
   1,064.80x = 1,287,279.03
5. Step 5: Solve for x
   x = 1,287,279.03/1,064.80
6. Step 6: Final answer
   x = 1,208.94