Finding the Fourth Proportional to 2,419.29, 3,630.76 and 1,121.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,419.29 : 3,630.76 = 1,121.67 : x
2. Step 2: Convert to fraction form
   2,419.29/3,630.76 = 1,121.67/x
3. Step 3: Cross multiply
   2,419.29x = 3,630.76 × 1,121.67
4. Step 4: Simplify right side
   2,419.29x = 4,072,514.57
5. Step 5: Solve for x
   x = 4,072,514.57/2,419.29
6. Step 6: Final answer
   x = 1,683.35