Finding the Fourth Proportional to 2,776.28, 4,164.31 and 696.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,776.28 : 4,164.31 = 696.30 : x
2. Step 2: Convert to fraction form
   2,776.28/4,164.31 = 696.30/x
3. Step 3: Cross multiply
   2,776.28x = 4,164.31 × 696.30
4. Step 4: Simplify right side
   2,776.28x = 2,899,588.23
5. Step 5: Solve for x
   x = 2,899,588.23/2,776.28
6. Step 6: Final answer
   x = 1,044.42