Finding the Fourth Proportional to 1,385.28, 1,910.52 and 1,074.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.28 : 1,910.52 = 1,074.24 : x
2. Step 2: Convert to fraction form
   1,385.28/1,910.52 = 1,074.24/x
3. Step 3: Cross multiply
   1,385.28x = 1,910.52 × 1,074.24
4. Step 4: Simplify right side
   1,385.28x = 2,052,357.00
5. Step 5: Solve for x
   x = 2,052,357.00/1,385.28
6. Step 6: Final answer
   x = 1,481.55