Finding the Fourth Proportional to 2,422.62, 3,630.30 and 1,121.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,422.62 : 3,630.30 = 1,121.40 : x
2. Step 2: Convert to fraction form
   2,422.62/3,630.30 = 1,121.40/x
3. Step 3: Cross multiply
   2,422.62x = 3,630.30 × 1,121.40
4. Step 4: Simplify right side
   2,422.62x = 4,071,018.42
5. Step 5: Solve for x
   x = 4,071,018.42/2,422.62
6. Step 6: Final answer
   x = 1,680.42