Finding the Fourth Proportional to 2,970.72, 4,456.69 and 996.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,970.72 : 4,456.69 = 996.55 : x
2. Step 2: Convert to fraction form
   2,970.72/4,456.69 = 996.55/x
3. Step 3: Cross multiply
   2,970.72x = 4,456.69 × 996.55
4. Step 4: Simplify right side
   2,970.72x = 4,441,300.79
5. Step 5: Solve for x
   x = 4,441,300.79/2,970.72
6. Step 6: Final answer
   x = 1,495.03