Finding the Fourth Proportional to 1,639.27, 2,461.37 and 1,410.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,639.27 : 2,461.37 = 1,410.65 : x
2. Step 2: Convert to fraction form
   1,639.27/2,461.37 = 1,410.65/x
3. Step 3: Cross multiply
   1,639.27x = 2,461.37 × 1,410.65
4. Step 4: Simplify right side
   1,639.27x = 3,472,131.59
5. Step 5: Solve for x
   x = 3,472,131.59/1,639.27
6. Step 6: Final answer
   x = 2,118.10