Finding the Fourth Proportional to 1,858.55, 2,788.43 and 1,449.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.55 : 2,788.43 = 1,449.09 : x
2. Step 2: Convert to fraction form
   1,858.55/2,788.43 = 1,449.09/x
3. Step 3: Cross multiply
   1,858.55x = 2,788.43 × 1,449.09
4. Step 4: Simplify right side
   1,858.55x = 4,040,678.78
5. Step 5: Solve for x
   x = 4,040,678.78/1,858.55
6. Step 6: Final answer
   x = 2,174.11