Finding the Fourth Proportional to 1,526.57, 2,106.52 and 863.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.57 : 2,106.52 = 863.47 : x
2. Step 2: Convert to fraction form
   1,526.57/2,106.52 = 863.47/x
3. Step 3: Cross multiply
   1,526.57x = 2,106.52 × 863.47
4. Step 4: Simplify right side
   1,526.57x = 1,818,909.40
5. Step 5: Solve for x
   x = 1,818,909.40/1,526.57
6. Step 6: Final answer
   x = 1,191.50