Finding the Fourth Proportional to 2,830.29, 4,243.21 and 1,788.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.29 : 4,243.21 = 1,788.10 : x
2. Step 2: Convert to fraction form
   2,830.29/4,243.21 = 1,788.10/x
3. Step 3: Cross multiply
   2,830.29x = 4,243.21 × 1,788.10
4. Step 4: Simplify right side
   2,830.29x = 7,587,268.72
5. Step 5: Solve for x
   x = 7,587,268.72/2,830.29
6. Step 6: Final answer
   x = 2,680.74