Finding the Fourth Proportional to 3,387.47, 5,081.25 and 1,047.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,387.47 : 5,081.25 = 1,047.45 : x
2. Step 2: Convert to fraction form
   3,387.47/5,081.25 = 1,047.45/x
3. Step 3: Cross multiply
   3,387.47x = 5,081.25 × 1,047.45
4. Step 4: Simplify right side
   3,387.47x = 5,322,355.31
5. Step 5: Solve for x
   x = 5,322,355.31/3,387.47
6. Step 6: Final answer
   x = 1,571.19