Finding the Fourth Proportional to 2,783.10, 4,175.46 and 1,322.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.10 : 4,175.46 = 1,322.28 : x
2. Step 2: Convert to fraction form
   2,783.10/4,175.46 = 1,322.28/x
3. Step 3: Cross multiply
   2,783.10x = 4,175.46 × 1,322.28
4. Step 4: Simplify right side
   2,783.10x = 5,521,127.25
5. Step 5: Solve for x
   x = 5,521,127.25/2,783.10
6. Step 6: Final answer
   x = 1,983.80