Finding the Fourth Proportional to 2,021.38, 2,789.01 and 1,181.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.38 : 2,789.01 = 1,181.60 : x
2. Step 2: Convert to fraction form
   2,021.38/2,789.01 = 1,181.60/x
3. Step 3: Cross multiply
   2,021.38x = 2,789.01 × 1,181.60
4. Step 4: Simplify right side
   2,021.38x = 3,295,494.22
5. Step 5: Solve for x
   x = 3,295,494.22/2,021.38
6. Step 6: Final answer
   x = 1,630.32