Finding the Fourth Proportional to 1,960.16, 2,903.56 and 1,938.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.16 : 2,903.56 = 1,938.32 : x
2. Step 2: Convert to fraction form
   1,960.16/2,903.56 = 1,938.32/x
3. Step 3: Cross multiply
   1,960.16x = 2,903.56 × 1,938.32
4. Step 4: Simplify right side
   1,960.16x = 5,628,028.42
5. Step 5: Solve for x
   x = 5,628,028.42/1,960.16
6. Step 6: Final answer
   x = 2,871.21