Finding the Fourth Proportional to 1,525.69, 2,105.31 and 862.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.69 : 2,105.31 = 862.59 : x
2. Step 2: Convert to fraction form
   1,525.69/2,105.31 = 862.59/x
3. Step 3: Cross multiply
   1,525.69x = 2,105.31 × 862.59
4. Step 4: Simplify right side
   1,525.69x = 1,816,019.35
5. Step 5: Solve for x
   x = 1,816,019.35/1,525.69
6. Step 6: Final answer
   x = 1,190.29