Finding the Fourth Proportional to 3,689.04, 5,090.76 and 2,117.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.04 : 5,090.76 = 2,117.10 : x
2. Step 2: Convert to fraction form
   3,689.04/5,090.76 = 2,117.10/x
3. Step 3: Cross multiply
   3,689.04x = 5,090.76 × 2,117.10
4. Step 4: Simplify right side
   3,689.04x = 10,777,648.00
5. Step 5: Solve for x
   x = 10,777,648.00/3,689.04
6. Step 6: Final answer
   x = 2,921.53