Finding the Fourth Proportional to 2,022.72, 2,790.84 and 1,551.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.72 : 2,790.84 = 1,551.09 : x
2. Step 2: Convert to fraction form
   2,022.72/2,790.84 = 1,551.09/x
3. Step 3: Cross multiply
   2,022.72x = 2,790.84 × 1,551.09
4. Step 4: Simplify right side
   2,022.72x = 4,328,844.02
5. Step 5: Solve for x
   x = 4,328,844.02/2,022.72
6. Step 6: Final answer
   x = 2,140.11