Finding the Fourth Proportional to 2,484.72, 3,726.12 and 840.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,484.72 : 3,726.12 = 840.96 : x
2. Step 2: Convert to fraction form
   2,484.72/3,726.12 = 840.96/x
3. Step 3: Cross multiply
   2,484.72x = 3,726.12 × 840.96
4. Step 4: Simplify right side
   2,484.72x = 3,133,517.88
5. Step 5: Solve for x
   x = 3,133,517.88/2,484.72
6. Step 6: Final answer
   x = 1,261.12