Finding the Fourth Proportional to 2,406.56, 3,610.35 and 762.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.56 : 3,610.35 = 762.89 : x
2. Step 2: Convert to fraction form
   2,406.56/3,610.35 = 762.89/x
3. Step 3: Cross multiply
   2,406.56x = 3,610.35 × 762.89
4. Step 4: Simplify right side
   2,406.56x = 2,754,299.91
5. Step 5: Solve for x
   x = 2,754,299.91/2,406.56
6. Step 6: Final answer
   x = 1,144.50