Finding the Fourth Proportional to 1,528.17, 2,287.78 and 1,382.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528.17 : 2,287.78 = 1,382.27 : x
2. Step 2: Convert to fraction form
   1,528.17/2,287.78 = 1,382.27/x
3. Step 3: Cross multiply
   1,528.17x = 2,287.78 × 1,382.27
4. Step 4: Simplify right side
   1,528.17x = 3,162,314.77
5. Step 5: Solve for x
   x = 3,162,314.77/1,528.17
6. Step 6: Final answer
   x = 2,069.35