Finding the Fourth Proportional to 1,525.47, 2,105.27 and 862.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.47 : 2,105.27 = 862.40 : x
2. Step 2: Convert to fraction form
   1,525.47/2,105.27 = 862.40/x
3. Step 3: Cross multiply
   1,525.47x = 2,105.27 × 862.40
4. Step 4: Simplify right side
   1,525.47x = 1,815,570.01
5. Step 5: Solve for x
   x = 1,815,570.01/1,525.47
6. Step 6: Final answer
   x = 1,190.17