Finding the Fourth Proportional to 3,945.82, 5,916.62 and 1,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.82 : 5,916.62 = 1,172.10 : x
2. Step 2: Convert to fraction form
   3,945.82/5,916.62 = 1,172.10/x
3. Step 3: Cross multiply
   3,945.82x = 5,916.62 × 1,172.10
4. Step 4: Simplify right side
   3,945.82x = 6,934,870.30
5. Step 5: Solve for x
   x = 6,934,870.30/3,945.82
6. Step 6: Final answer
   x = 1,757.52