Finding the Fourth Proportional to 2,784.35, 4,175.30 and 836.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.35 : 4,175.30 = 836.10 : x
2. Step 2: Convert to fraction form
   2,784.35/4,175.30 = 836.10/x
3. Step 3: Cross multiply
   2,784.35x = 4,175.30 × 836.10
4. Step 4: Simplify right side
   2,784.35x = 3,490,968.33
5. Step 5: Solve for x
   x = 3,490,968.33/2,784.35
6. Step 6: Final answer
   x = 1,253.78