Finding the Fourth Proportional to 2,538.86, 3,809.52 and 2,210.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.86 : 3,809.52 = 2,210.42 : x
2. Step 2: Convert to fraction form
   2,538.86/3,809.52 = 2,210.42/x
3. Step 3: Cross multiply
   2,538.86x = 3,809.52 × 2,210.42
4. Step 4: Simplify right side
   2,538.86x = 8,420,639.20
5. Step 5: Solve for x
   x = 8,420,639.20/2,538.86
6. Step 6: Final answer
   x = 3,316.70