Finding the Fourth Proportional to 3,111.45, 4,294.43 and 1,786.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.45 : 4,294.43 = 1,786.06 : x
2. Step 2: Convert to fraction form
   3,111.45/4,294.43 = 1,786.06/x
3. Step 3: Cross multiply
   3,111.45x = 4,294.43 × 1,786.06
4. Step 4: Simplify right side
   3,111.45x = 7,670,109.65
5. Step 5: Solve for x
   x = 7,670,109.65/3,111.45
6. Step 6: Final answer
   x = 2,465.12