Finding the Fourth Proportional to 2,784.50, 4,176.61 and 836.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.50 : 4,176.61 = 836.63 : x
2. Step 2: Convert to fraction form
   2,784.50/4,176.61 = 836.63/x
3. Step 3: Cross multiply
   2,784.50x = 4,176.61 × 836.63
4. Step 4: Simplify right side
   2,784.50x = 3,494,254.25
5. Step 5: Solve for x
   x = 3,494,254.25/2,784.50
6. Step 6: Final answer
   x = 1,254.90