Finding the Fourth Proportional to 1,525.83, 2,105.43 and 862.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.83 : 2,105.43 = 862.58 : x
2. Step 2: Convert to fraction form
   1,525.83/2,105.43 = 862.58/x
3. Step 3: Cross multiply
   1,525.83x = 2,105.43 × 862.58
4. Step 4: Simplify right side
   1,525.83x = 1,816,091.28
5. Step 5: Solve for x
   x = 1,816,091.28/1,525.83
6. Step 6: Final answer
   x = 1,190.23