Finding the Fourth Proportional to 2,786.06, 4,175.42 and 1,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,786.06 : 4,175.42 = 1,140.72 : x
2. Step 2: Convert to fraction form
   2,786.06/4,175.42 = 1,140.72/x
3. Step 3: Cross multiply
   2,786.06x = 4,175.42 × 1,140.72
4. Step 4: Simplify right side
   2,786.06x = 4,762,979.40
5. Step 5: Solve for x
   x = 4,762,979.40/2,786.06
6. Step 6: Final answer
   x = 1,709.58