Finding the Fourth Proportional to 2,989.98, 4,483.25 and 909.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.98 : 4,483.25 = 909.36 : x
2. Step 2: Convert to fraction form
   2,989.98/4,483.25 = 909.36/x
3. Step 3: Cross multiply
   2,989.98x = 4,483.25 × 909.36
4. Step 4: Simplify right side
   2,989.98x = 4,076,888.22
5. Step 5: Solve for x
   x = 4,076,888.22/2,989.98
6. Step 6: Final answer
   x = 1,363.52