Finding the Fourth Proportional to 2,426.42, 3,638.60 and 760.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.42 : 3,638.60 = 760.10 : x
2. Step 2: Convert to fraction form
   2,426.42/3,638.60 = 760.10/x
3. Step 3: Cross multiply
   2,426.42x = 3,638.60 × 760.10
4. Step 4: Simplify right side
   2,426.42x = 2,765,699.86
5. Step 5: Solve for x
   x = 2,765,699.86/2,426.42
6. Step 6: Final answer
   x = 1,139.83