Finding the Fourth Proportional to 2,201.62, 3,300.21 and 1,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,201.62 : 3,300.21 = 1,380.47 : x
2. Step 2: Convert to fraction form
   2,201.62/3,300.21 = 1,380.47/x
3. Step 3: Cross multiply
   2,201.62x = 3,300.21 × 1,380.47
4. Step 4: Simplify right side
   2,201.62x = 4,555,840.90
5. Step 5: Solve for x
   x = 4,555,840.90/2,201.62
6. Step 6: Final answer
   x = 2,069.31