Finding the Fourth Proportional to 2,487.42, 3,426.84 and 2,047.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,487.42 : 3,426.84 = 2,047.86 : x
2. Step 2: Convert to fraction form
   2,487.42/3,426.84 = 2,047.86/x
3. Step 3: Cross multiply
   2,487.42x = 3,426.84 × 2,047.86
4. Step 4: Simplify right side
   2,487.42x = 7,017,688.56
5. Step 5: Solve for x
   x = 7,017,688.56/2,487.42
6. Step 6: Final answer
   x = 2,821.27