Finding the Fourth Proportional to 2,609.48, 3,914.62 and 760.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.48 : 3,914.62 = 760.73 : x
2. Step 2: Convert to fraction form
   2,609.48/3,914.62 = 760.73/x
3. Step 3: Cross multiply
   2,609.48x = 3,914.62 × 760.73
4. Step 4: Simplify right side
   2,609.48x = 2,977,947.40
5. Step 5: Solve for x
   x = 2,977,947.40/2,609.48
6. Step 6: Final answer
   x = 1,141.20