Finding the Fourth Proportional to 3,996.65, 5,994.50 and 1,074.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.65 : 5,994.50 = 1,074.72 : x
2. Step 2: Convert to fraction form
   3,996.65/5,994.50 = 1,074.72/x
3. Step 3: Cross multiply
   3,996.65x = 5,994.50 × 1,074.72
4. Step 4: Simplify right side
   3,996.65x = 6,442,403.67
5. Step 5: Solve for x
   x = 6,442,403.67/3,996.65
6. Step 6: Final answer
   x = 1,611.95