Finding the Fourth Proportional to 2,477.79, 3,713.49 and 1,089

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.79 : 3,713.49 = 1,089 : x
2. Step 2: Convert to fraction form
   2,477.79/3,713.49 = 1,089/x
3. Step 3: Cross multiply
   2,477.79x = 3,713.49 × 1,089
4. Step 4: Simplify right side
   2,477.79x = 4,043,990.61
5. Step 5: Solve for x
   x = 4,043,990.61/2,477.79
6. Step 6: Final answer
   x = 1,632.10