Finding the Fourth Proportional to 2,625.28, 3,938.60 and 981.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.28 : 3,938.60 = 981.86 : x
2. Step 2: Convert to fraction form
   2,625.28/3,938.60 = 981.86/x
3. Step 3: Cross multiply
   2,625.28x = 3,938.60 × 981.86
4. Step 4: Simplify right side
   2,625.28x = 3,867,136.56
5. Step 5: Solve for x
   x = 3,867,136.56/2,625.28
6. Step 6: Final answer
   x = 1,473.04