Finding the Fourth Proportional to 2,609.95, 3,914.72 and 761.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.95 : 3,914.72 = 761.08 : x
2. Step 2: Convert to fraction form
   2,609.95/3,914.72 = 761.08/x
3. Step 3: Cross multiply
   2,609.95x = 3,914.72 × 761.08
4. Step 4: Simplify right side
   2,609.95x = 2,979,391.72
5. Step 5: Solve for x
   x = 2,979,391.72/2,609.95
6. Step 6: Final answer
   x = 1,141.55