Finding the Fourth Proportional to 2,045.10, 2,821.59 and 1,818.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.10 : 2,821.59 = 1,818.30 : x
2. Step 2: Convert to fraction form
   2,045.10/2,821.59 = 1,818.30/x
3. Step 3: Cross multiply
   2,045.10x = 2,821.59 × 1,818.30
4. Step 4: Simplify right side
   2,045.10x = 5,130,497.10
5. Step 5: Solve for x
   x = 5,130,497.10/2,045.10
6. Step 6: Final answer
   x = 2,508.68