Finding the Fourth Proportional to 3,362.05, 5,045.09 and 1,172.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,362.05 : 5,045.09 = 1,172.31 : x
2. Step 2: Convert to fraction form
   3,362.05/5,045.09 = 1,172.31/x
3. Step 3: Cross multiply
   3,362.05x = 5,045.09 × 1,172.31
4. Step 4: Simplify right side
   3,362.05x = 5,914,409.46
5. Step 5: Solve for x
   x = 5,914,409.46/3,362.05
6. Step 6: Final answer
   x = 1,759.17