Finding the Fourth Proportional to 2,066.90, 2,855.94 and 1,628.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.90 : 2,855.94 = 1,628.30 : x
2. Step 2: Convert to fraction form
   2,066.90/2,855.94 = 1,628.30/x
3. Step 3: Cross multiply
   2,066.90x = 2,855.94 × 1,628.30
4. Step 4: Simplify right side
   2,066.90x = 4,650,327.10
5. Step 5: Solve for x
   x = 4,650,327.10/2,066.90
6. Step 6: Final answer
   x = 2,249.90