Finding the Fourth Proportional to 2,635.86, 3,631.87 and 2,162.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.86 : 3,631.87 = 2,162.15 : x
2. Step 2: Convert to fraction form
   2,635.86/3,631.87 = 2,162.15/x
3. Step 3: Cross multiply
   2,635.86x = 3,631.87 × 2,162.15
4. Step 4: Simplify right side
   2,635.86x = 7,852,647.72
5. Step 5: Solve for x
   x = 7,852,647.72/2,635.86
6. Step 6: Final answer
   x = 2,979.16