Finding the Fourth Proportional to 1,526.59, 2,106.75 and 863.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.59 : 2,106.75 = 863.43 : x
2. Step 2: Convert to fraction form
   1,526.59/2,106.75 = 863.43/x
3. Step 3: Cross multiply
   1,526.59x = 2,106.75 × 863.43
4. Step 4: Simplify right side
   1,526.59x = 1,819,031.86
5. Step 5: Solve for x
   x = 1,819,031.86/1,526.59
6. Step 6: Final answer
   x = 1,191.56