Finding the Fourth Proportional to 1,786.10, 2,464.42 and 1,122.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,786.10 : 2,464.42 = 1,122.72 : x
2. Step 2: Convert to fraction form
   1,786.10/2,464.42 = 1,122.72/x
3. Step 3: Cross multiply
   1,786.10x = 2,464.42 × 1,122.72
4. Step 4: Simplify right side
   1,786.10x = 2,766,853.62
5. Step 5: Solve for x
   x = 2,766,853.62/1,786.10
6. Step 6: Final answer
   x = 1,549.10