Finding the Fourth Proportional to 1,526.70, 2,106.83 and 863.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.70 : 2,106.83 = 863.55 : x
2. Step 2: Convert to fraction form
   1,526.70/2,106.83 = 863.55/x
3. Step 3: Cross multiply
   1,526.70x = 2,106.83 × 863.55
4. Step 4: Simplify right side
   1,526.70x = 1,819,348.73
5. Step 5: Solve for x
   x = 1,819,348.73/1,526.70
6. Step 6: Final answer
   x = 1,191.69