Finding the Fourth Proportional to 3,689.00, 5,090.24 and 2,116.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.00 : 5,090.24 = 2,116.79 : x
2. Step 2: Convert to fraction form
   3,689.00/5,090.24 = 2,116.79/x
3. Step 3: Cross multiply
   3,689.00x = 5,090.24 × 2,116.79
4. Step 4: Simplify right side
   3,689.00x = 10,774,933.09
5. Step 5: Solve for x
   x = 10,774,933.09/3,689.00
6. Step 6: Final answer
   x = 2,920.83