Finding the Fourth Proportional to 3,339.05, 5,009.40 and 1,147.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,339.05 : 5,009.40 = 1,147.81 : x
2. Step 2: Convert to fraction form
   3,339.05/5,009.40 = 1,147.81/x
3. Step 3: Cross multiply
   3,339.05x = 5,009.40 × 1,147.81
4. Step 4: Simplify right side
   3,339.05x = 5,749,839.41
5. Step 5: Solve for x
   x = 5,749,839.41/3,339.05
6. Step 6: Final answer
   x = 1,722.00