Finding the Fourth Proportional to 1,525.59, 2,105.31 and 862.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.59 : 2,105.31 = 862.44 : x
2. Step 2: Convert to fraction form
   1,525.59/2,105.31 = 862.44/x
3. Step 3: Cross multiply
   1,525.59x = 2,105.31 × 862.44
4. Step 4: Simplify right side
   1,525.59x = 1,815,703.56
5. Step 5: Solve for x
   x = 1,815,703.56/1,525.59
6. Step 6: Final answer
   x = 1,190.17