Finding the Fourth Proportional to 3,388.20, 5,080.39 and 1,047.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388.20 : 5,080.39 = 1,047.53 : x
2. Step 2: Convert to fraction form
   3,388.20/5,080.39 = 1,047.53/x
3. Step 3: Cross multiply
   3,388.20x = 5,080.39 × 1,047.53
4. Step 4: Simplify right side
   3,388.20x = 5,321,871.02
5. Step 5: Solve for x
   x = 5,321,871.02/3,388.20
6. Step 6: Final answer
   x = 1,570.71