Finding the Fourth Proportional to 2,696.00, 4,042.63 and 821.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,696.00 : 4,042.63 = 821.53 : x
2. Step 2: Convert to fraction form
   2,696.00/4,042.63 = 821.53/x
3. Step 3: Cross multiply
   2,696.00x = 4,042.63 × 821.53
4. Step 4: Simplify right side
   2,696.00x = 3,321,117.50
5. Step 5: Solve for x
   x = 3,321,117.50/2,696.00
6. Step 6: Final answer
   x = 1,231.87