Finding the Fourth Proportional to 1,525.20, 2,104.77 and 862.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.20 : 2,104.77 = 862.06 : x
2. Step 2: Convert to fraction form
   1,525.20/2,104.77 = 862.06/x
3. Step 3: Cross multiply
   1,525.20x = 2,104.77 × 862.06
4. Step 4: Simplify right side
   1,525.20x = 1,814,429.85
5. Step 5: Solve for x
   x = 1,814,429.85/1,525.20
6. Step 6: Final answer
   x = 1,189.63