Finding the Fourth Proportional to 2,405.10, 3,607.59 and 761.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.10 : 3,607.59 = 761.42 : x
2. Step 2: Convert to fraction form
   2,405.10/3,607.59 = 761.42/x
3. Step 3: Cross multiply
   2,405.10x = 3,607.59 × 761.42
4. Step 4: Simplify right side
   2,405.10x = 2,746,891.18
5. Step 5: Solve for x
   x = 2,746,891.18/2,405.10
6. Step 6: Final answer
   x = 1,142.11