Finding the Fourth Proportional to 3,065.15, 4,229.91 and 1,667.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,065.15 : 4,229.91 = 1,667.90 : x
2. Step 2: Convert to fraction form
   3,065.15/4,229.91 = 1,667.90/x
3. Step 3: Cross multiply
   3,065.15x = 4,229.91 × 1,667.90
4. Step 4: Simplify right side
   3,065.15x = 7,055,066.89
5. Step 5: Solve for x
   x = 7,055,066.89/3,065.15
6. Step 6: Final answer
   x = 2,301.70