Finding the Fourth Proportional to 2,830.11, 4,242.55 and 1,074.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,830.11 : 4,242.55 = 1,074.59 : x
2. Step 2: Convert to fraction form
   2,830.11/4,242.55 = 1,074.59/x
3. Step 3: Cross multiply
   2,830.11x = 4,242.55 × 1,074.59
4. Step 4: Simplify right side
   2,830.11x = 4,559,010.78
5. Step 5: Solve for x
   x = 4,559,010.78/2,830.11
6. Step 6: Final answer
   x = 1,610.89