Finding the Fourth Proportional to 3,990.89, 5,985.72 and 2,234.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,990.89 : 5,985.72 = 2,234.81 : x
2. Step 2: Convert to fraction form
   3,990.89/5,985.72 = 2,234.81/x
3. Step 3: Cross multiply
   3,990.89x = 5,985.72 × 2,234.81
4. Step 4: Simplify right side
   3,990.89x = 13,376,961.88
5. Step 5: Solve for x
   x = 13,376,961.88/3,990.89
6. Step 6: Final answer
   x = 3,351.87