Finding the Fourth Proportional to 1,640.76, 2,249.00 and 1,617.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640.76 : 2,249.00 = 1,617.71 : x
2. Step 2: Convert to fraction form
   1,640.76/2,249.00 = 1,617.71/x
3. Step 3: Cross multiply
   1,640.76x = 2,249.00 × 1,617.71
4. Step 4: Simplify right side
   1,640.76x = 3,638,210.46
5. Step 5: Solve for x
   x = 3,638,210.46/1,640.76
6. Step 6: Final answer
   x = 2,217.39