Finding the Fourth Proportional to 2,625.48, 3,936.42 and 981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.48 : 3,936.42 = 981.72 : x
2. Step 2: Convert to fraction form
   2,625.48/3,936.42 = 981.72/x
3. Step 3: Cross multiply
   2,625.48x = 3,936.42 × 981.72
4. Step 4: Simplify right side
   2,625.48x = 3,864,462.24
5. Step 5: Solve for x
   x = 3,864,462.24/2,625.48
6. Step 6: Final answer
   x = 1,471.91