Finding the Fourth Proportional to 1,814.52, 2,503.72 and 1,028.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.52 : 2,503.72 = 1,028.40 : x
2. Step 2: Convert to fraction form
   1,814.52/2,503.72 = 1,028.40/x
3. Step 3: Cross multiply
   1,814.52x = 2,503.72 × 1,028.40
4. Step 4: Simplify right side
   1,814.52x = 2,574,825.65
5. Step 5: Solve for x
   x = 2,574,825.65/1,814.52
6. Step 6: Final answer
   x = 1,419.01