Finding the Fourth Proportional to 2,784.42, 4,176.17 and 836.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.42 : 4,176.17 = 836.28 : x
2. Step 2: Convert to fraction form
   2,784.42/4,176.17 = 836.28/x
3. Step 3: Cross multiply
   2,784.42x = 4,176.17 × 836.28
4. Step 4: Simplify right side
   2,784.42x = 3,492,426.57
5. Step 5: Solve for x
   x = 3,492,426.57/2,784.42
6. Step 6: Final answer
   x = 1,254.28