Finding the Fourth Proportional to 2,020.62, 2,788.32 and 1,181.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.62 : 2,788.32 = 1,181.55 : x
2. Step 2: Convert to fraction form
   2,020.62/2,788.32 = 1,181.55/x
3. Step 3: Cross multiply
   2,020.62x = 2,788.32 × 1,181.55
4. Step 4: Simplify right side
   2,020.62x = 3,294,539.50
5. Step 5: Solve for x
   x = 3,294,539.50/2,020.62
6. Step 6: Final answer
   x = 1,630.46