Finding the Fourth Proportional to 2,020.06, 2,788.58 and 1,570.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.06 : 2,788.58 = 1,570.91 : x
2. Step 2: Convert to fraction form
   2,020.06/2,788.58 = 1,570.91/x
3. Step 3: Cross multiply
   2,020.06x = 2,788.58 × 1,570.91
4. Step 4: Simplify right side
   2,020.06x = 4,380,600.35
5. Step 5: Solve for x
   x = 4,380,600.35/2,020.06
6. Step 6: Final answer
   x = 2,168.55