Finding the Fourth Proportional to 2,278.89, 3,416.18 and 981.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,278.89 : 3,416.18 = 981.27 : x
2. Step 2: Convert to fraction form
   2,278.89/3,416.18 = 981.27/x
3. Step 3: Cross multiply
   2,278.89x = 3,416.18 × 981.27
4. Step 4: Simplify right side
   2,278.89x = 3,352,190.04
5. Step 5: Solve for x
   x = 3,352,190.04/2,278.89
6. Step 6: Final answer
   x = 1,470.97