Finding the Fourth Proportional to 3,610.71, 4,981.14 and 2,118.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,610.71 : 4,981.14 = 2,118.69 : x
2. Step 2: Convert to fraction form
   3,610.71/4,981.14 = 2,118.69/x
3. Step 3: Cross multiply
   3,610.71x = 4,981.14 × 2,118.69
4. Step 4: Simplify right side
   3,610.71x = 10,553,491.51
5. Step 5: Solve for x
   x = 10,553,491.51/3,610.71
6. Step 6: Final answer
   x = 2,922.83