Finding the Fourth Proportional to 2,540.68, 3,810.73 and 691.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.68 : 3,810.73 = 691.94 : x
2. Step 2: Convert to fraction form
   2,540.68/3,810.73 = 691.94/x
3. Step 3: Cross multiply
   2,540.68x = 3,810.73 × 691.94
4. Step 4: Simplify right side
   2,540.68x = 2,636,796.52
5. Step 5: Solve for x
   x = 2,636,796.52/2,540.68
6. Step 6: Final answer
   x = 1,037.83