Finding the Fourth Proportional to 3,390.03, 5,085.84 and 1,081.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390.03 : 5,085.84 = 1,081.53 : x
2. Step 2: Convert to fraction form
   3,390.03/5,085.84 = 1,081.53/x
3. Step 3: Cross multiply
   3,390.03x = 5,085.84 × 1,081.53
4. Step 4: Simplify right side
   3,390.03x = 5,500,488.54
5. Step 5: Solve for x
   x = 5,500,488.54/3,390.03
6. Step 6: Final answer
   x = 1,622.55