Finding the Fourth Proportional to 2,484.16, 3,725.76 and 840.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,484.16 : 3,725.76 = 840.56 : x
2. Step 2: Convert to fraction form
   2,484.16/3,725.76 = 840.56/x
3. Step 3: Cross multiply
   2,484.16x = 3,725.76 × 840.56
4. Step 4: Simplify right side
   2,484.16x = 3,131,724.83
5. Step 5: Solve for x
   x = 3,131,724.83/2,484.16
6. Step 6: Final answer
   x = 1,260.68