Finding the Fourth Proportional to 2,386.42, 3,574.06 and 1,212.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.42 : 3,574.06 = 1,212.73 : x
2. Step 2: Convert to fraction form
   2,386.42/3,574.06 = 1,212.73/x
3. Step 3: Cross multiply
   2,386.42x = 3,574.06 × 1,212.73
4. Step 4: Simplify right side
   2,386.42x = 4,334,357.82
5. Step 5: Solve for x
   x = 4,334,357.82/2,386.42
6. Step 6: Final answer
   x = 1,816.26