Finding the Fourth Proportional to 3,601.45, 5,400.69 and 1,380.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,601.45 : 5,400.69 = 1,380.03 : x
2. Step 2: Convert to fraction form
   3,601.45/5,400.69 = 1,380.03/x
3. Step 3: Cross multiply
   3,601.45x = 5,400.69 × 1,380.03
4. Step 4: Simplify right side
   3,601.45x = 7,453,114.22
5. Step 5: Solve for x
   x = 7,453,114.22/3,601.45
6. Step 6: Final answer
   x = 2,069.48