Finding the Fourth Proportional to 2,937.72, 4,406.56 and 989.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,937.72 : 4,406.56 = 989.46 : x
2. Step 2: Convert to fraction form
   2,937.72/4,406.56 = 989.46/x
3. Step 3: Cross multiply
   2,937.72x = 4,406.56 × 989.46
4. Step 4: Simplify right side
   2,937.72x = 4,360,114.86
5. Step 5: Solve for x
   x = 4,360,114.86/2,937.72
6. Step 6: Final answer
   x = 1,484.18