Finding the Fourth Proportional to 1,672.16, 2,308.62 and 1,162.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.16 : 2,308.62 = 1,162.07 : x
2. Step 2: Convert to fraction form
   1,672.16/2,308.62 = 1,162.07/x
3. Step 3: Cross multiply
   1,672.16x = 2,308.62 × 1,162.07
4. Step 4: Simplify right side
   1,672.16x = 2,682,766.50
5. Step 5: Solve for x
   x = 2,682,766.50/1,672.16
6. Step 6: Final answer
   x = 1,604.38