Finding the Fourth Proportional to 2,607.05, 3,911.03 and 1,147.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.05 : 3,911.03 = 1,147.23 : x
2. Step 2: Convert to fraction form
   2,607.05/3,911.03 = 1,147.23/x
3. Step 3: Cross multiply
   2,607.05x = 3,911.03 × 1,147.23
4. Step 4: Simplify right side
   2,607.05x = 4,486,850.95
5. Step 5: Solve for x
   x = 4,486,850.95/2,607.05
6. Step 6: Final answer
   x = 1,721.05