Finding the Fourth Proportional to 2,784.69, 4,175.49 and 1,142.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.69 : 4,175.49 = 1,142.40 : x
2. Step 2: Convert to fraction form
   2,784.69/4,175.49 = 1,142.40/x
3. Step 3: Cross multiply
   2,784.69x = 4,175.49 × 1,142.40
4. Step 4: Simplify right side
   2,784.69x = 4,770,079.78
5. Step 5: Solve for x
   x = 4,770,079.78/2,784.69
6. Step 6: Final answer
   x = 1,712.97