Finding the Fourth Proportional to 1,814.86, 2,504.50 and 1,028.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.86 : 2,504.50 = 1,028.90 : x
2. Step 2: Convert to fraction form
   1,814.86/2,504.50 = 1,028.90/x
3. Step 3: Cross multiply
   1,814.86x = 2,504.50 × 1,028.90
4. Step 4: Simplify right side
   1,814.86x = 2,576,886.31
5. Step 5: Solve for x
   x = 2,576,886.31/1,814.86
6. Step 6: Final answer
   x = 1,419.89