Finding the Fourth Proportional to 1,382.24, 2,068.50 and 1,055

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.24 : 2,068.50 = 1,055 : x
2. Step 2: Convert to fraction form
   1,382.24/2,068.50 = 1,055/x
3. Step 3: Cross multiply
   1,382.24x = 2,068.50 × 1,055
4. Step 4: Simplify right side
   1,382.24x = 2,182,267.50
5. Step 5: Solve for x
   x = 2,182,267.50/1,382.24
6. Step 6: Final answer
   x = 1,578.79