Finding the Fourth Proportional to 3,388.85, 5,081.31 and 1,048.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,388.85 : 5,081.31 = 1,048.23 : x
2. Step 2: Convert to fraction form
   3,388.85/5,081.31 = 1,048.23/x
3. Step 3: Cross multiply
   3,388.85x = 5,081.31 × 1,048.23
4. Step 4: Simplify right side
   3,388.85x = 5,326,381.58
5. Step 5: Solve for x
   x = 5,326,381.58/3,388.85
6. Step 6: Final answer
   x = 1,571.74