Finding the Fourth Proportional to 1,525.61, 2,105.18 and 862.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.61 : 2,105.18 = 862.32 : x
2. Step 2: Convert to fraction form
   1,525.61/2,105.18 = 862.32/x
3. Step 3: Cross multiply
   1,525.61x = 2,105.18 × 862.32
4. Step 4: Simplify right side
   1,525.61x = 1,815,334.51
5. Step 5: Solve for x
   x = 1,815,334.51/1,525.61
6. Step 6: Final answer
   x = 1,189.91