Finding the Fourth Proportional to 2,885.01, 3,977.31 and 1,939.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.01 : 3,977.31 = 1,939.15 : x
2. Step 2: Convert to fraction form
   2,885.01/3,977.31 = 1,939.15/x
3. Step 3: Cross multiply
   2,885.01x = 3,977.31 × 1,939.15
4. Step 4: Simplify right side
   2,885.01x = 7,712,600.69
5. Step 5: Solve for x
   x = 7,712,600.69/2,885.01
6. Step 6: Final answer
   x = 2,673.34