Finding the Fourth Proportional to 2,874.12, 4,308.69 and 1,313.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.12 : 4,308.69 = 1,313.58 : x
2. Step 2: Convert to fraction form
   2,874.12/4,308.69 = 1,313.58/x
3. Step 3: Cross multiply
   2,874.12x = 4,308.69 × 1,313.58
4. Step 4: Simplify right side
   2,874.12x = 5,659,809.01
5. Step 5: Solve for x
   x = 5,659,809.01/2,874.12
6. Step 6: Final answer
   x = 1,969.23