Finding the Fourth Proportional to 3,018.47, 4,165.20 and 1,691.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,018.47 : 4,165.20 = 1,691.89 : x
2. Step 2: Convert to fraction form
   3,018.47/4,165.20 = 1,691.89/x
3. Step 3: Cross multiply
   3,018.47x = 4,165.20 × 1,691.89
4. Step 4: Simplify right side
   3,018.47x = 7,047,049.82
5. Step 5: Solve for x
   x = 7,047,049.82/3,018.47
6. Step 6: Final answer
   x = 2,334.65