Finding the Fourth Proportional to 2,890.49, 3,990.06 and 1,829.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.49 : 3,990.06 = 1,829.79 : x
2. Step 2: Convert to fraction form
   2,890.49/3,990.06 = 1,829.79/x
3. Step 3: Cross multiply
   2,890.49x = 3,990.06 × 1,829.79
4. Step 4: Simplify right side
   2,890.49x = 7,300,971.89
5. Step 5: Solve for x
   x = 7,300,971.89/2,890.49
6. Step 6: Final answer
   x = 2,525.86