Finding the Fourth Proportional to 1,526.86, 2,107.06 and 863.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.86 : 2,107.06 = 863.71 : x
2. Step 2: Convert to fraction form
   1,526.86/2,107.06 = 863.71/x
3. Step 3: Cross multiply
   1,526.86x = 2,107.06 × 863.71
4. Step 4: Simplify right side
   1,526.86x = 1,819,881.37
5. Step 5: Solve for x
   x = 1,819,881.37/1,526.86
6. Step 6: Final answer
   x = 1,191.91