Finding the Fourth Proportional to 3,981.42, 5,494.32 and 2,212.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.42 : 5,494.32 = 2,212.98 : x
2. Step 2: Convert to fraction form
   3,981.42/5,494.32 = 2,212.98/x
3. Step 3: Cross multiply
   3,981.42x = 5,494.32 × 2,212.98
4. Step 4: Simplify right side
   3,981.42x = 12,158,820.27
5. Step 5: Solve for x
   x = 12,158,820.27/3,981.42
6. Step 6: Final answer
   x = 3,053.89