Finding the Fourth Proportional to 2,456.91, 3,689.06 and 2,113.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.91 : 3,689.06 = 2,113.98 : x
2. Step 2: Convert to fraction form
   2,456.91/3,689.06 = 2,113.98/x
3. Step 3: Cross multiply
   2,456.91x = 3,689.06 × 2,113.98
4. Step 4: Simplify right side
   2,456.91x = 7,798,599.06
5. Step 5: Solve for x
   x = 7,798,599.06/2,456.91
6. Step 6: Final answer
   x = 3,174.15