Finding the Fourth Proportional to 2,992.22, 4,485.30 and 1,238.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,992.22 : 4,485.30 = 1,238.48 : x
2. Step 2: Convert to fraction form
   2,992.22/4,485.30 = 1,238.48/x
3. Step 3: Cross multiply
   2,992.22x = 4,485.30 × 1,238.48
4. Step 4: Simplify right side
   2,992.22x = 5,554,954.34
5. Step 5: Solve for x
   x = 5,554,954.34/2,992.22
6. Step 6: Final answer
   x = 1,856.47