Finding the Fourth Proportional to 3,970.73, 5,478.72 and 2,292.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.73 : 5,478.72 = 2,292.03 : x
2. Step 2: Convert to fraction form
   3,970.73/5,478.72 = 2,292.03/x
3. Step 3: Cross multiply
   3,970.73x = 5,478.72 × 2,292.03
4. Step 4: Simplify right side
   3,970.73x = 12,557,363.21
5. Step 5: Solve for x
   x = 12,557,363.21/3,970.73
6. Step 6: Final answer
   x = 3,162.49