Finding the Fourth Proportional to 2,406.91, 3,610.54 and 763.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.91 : 3,610.54 = 763.57 : x
2. Step 2: Convert to fraction form
   2,406.91/3,610.54 = 763.57/x
3. Step 3: Cross multiply
   2,406.91x = 3,610.54 × 763.57
4. Step 4: Simplify right side
   2,406.91x = 2,756,900.03
5. Step 5: Solve for x
   x = 2,756,900.03/2,406.91
6. Step 6: Final answer
   x = 1,145.41