Finding the Fourth Proportional to 2,487.86, 3,434.73 and 2,211.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.86 : 3,434.73 = 2,211.07 : x
2. Step 2: Convert to fraction form
   2,487.86/3,434.73 = 2,211.07/x
3. Step 3: Cross multiply
   2,487.86x = 3,434.73 × 2,211.07
4. Step 4: Simplify right side
   2,487.86x = 7,594,433.90
5. Step 5: Solve for x
   x = 7,594,433.90/2,487.86
6. Step 6: Final answer
   x = 3,052.59