Finding the Fourth Proportional to 2,470.81, 3,391.56 and 2,184.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,470.81 : 3,391.56 = 2,184.78 : x
2. Step 2: Convert to fraction form
   2,470.81/3,391.56 = 2,184.78/x
3. Step 3: Cross multiply
   2,470.81x = 3,391.56 × 2,184.78
4. Step 4: Simplify right side
   2,470.81x = 7,409,812.46
5. Step 5: Solve for x
   x = 7,409,812.46/2,470.81
6. Step 6: Final answer
   x = 2,998.94