Finding the Fourth Proportional to 1,528.76, 2,109.33 and 865.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.76 : 2,109.33 = 865.37 : x
2. Step 2: Convert to fraction form
   1,528.76/2,109.33 = 865.37/x
3. Step 3: Cross multiply
   1,528.76x = 2,109.33 × 865.37
4. Step 4: Simplify right side
   1,528.76x = 1,825,340.36
5. Step 5: Solve for x
   x = 1,825,340.36/1,528.76
6. Step 6: Final answer
   x = 1,194.00