Finding the Fourth Proportional to 1,526.37, 2,106.37 and 863.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.37 : 2,106.37 = 863.20 : x
2. Step 2: Convert to fraction form
   1,526.37/2,106.37 = 863.20/x
3. Step 3: Cross multiply
   1,526.37x = 2,106.37 × 863.20
4. Step 4: Simplify right side
   1,526.37x = 1,818,218.58
5. Step 5: Solve for x
   x = 1,818,218.58/1,526.37
6. Step 6: Final answer
   x = 1,191.20