Finding the Fourth Proportional to 1,814.42, 2,503.88 and 1,028.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.42 : 2,503.88 = 1,028.47 : x
2. Step 2: Convert to fraction form
   1,814.42/2,503.88 = 1,028.47/x
3. Step 3: Cross multiply
   1,814.42x = 2,503.88 × 1,028.47
4. Step 4: Simplify right side
   1,814.42x = 2,575,165.46
5. Step 5: Solve for x
   x = 2,575,165.46/1,814.42
6. Step 6: Final answer
   x = 1,419.28