Finding the Fourth Proportional to 2,099.42, 3,148.08 and 1,222.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.42 : 3,148.08 = 1,222.21 : x
2. Step 2: Convert to fraction form
   2,099.42/3,148.08 = 1,222.21/x
3. Step 3: Cross multiply
   2,099.42x = 3,148.08 × 1,222.21
4. Step 4: Simplify right side
   2,099.42x = 3,847,614.86
5. Step 5: Solve for x
   x = 3,847,614.86/2,099.42
6. Step 6: Final answer
   x = 1,832.70