Finding the Fourth Proportional to 1,526.73, 2,106.86 and 863.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.73 : 2,106.86 = 863.58 : x
2. Step 2: Convert to fraction form
   1,526.73/2,106.86 = 863.58/x
3. Step 3: Cross multiply
   1,526.73x = 2,106.86 × 863.58
4. Step 4: Simplify right side
   1,526.73x = 1,819,433.89
5. Step 5: Solve for x
   x = 1,819,433.89/1,526.73
6. Step 6: Final answer
   x = 1,191.72