Finding the Fourth Proportional to 2,401.15, 3,600.41 and 840.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.15 : 3,600.41 = 840.74 : x
2. Step 2: Convert to fraction form
   2,401.15/3,600.41 = 840.74/x
3. Step 3: Cross multiply
   2,401.15x = 3,600.41 × 840.74
4. Step 4: Simplify right side
   2,401.15x = 3,027,004.50
5. Step 5: Solve for x
   x = 3,027,004.50/2,401.15
6. Step 6: Final answer
   x = 1,260.65