Finding the Fourth Proportional to 2,938.01, 4,402.89 and 2,112.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.01 : 4,402.89 = 2,112.39 : x
2. Step 2: Convert to fraction form
   2,938.01/4,402.89 = 2,112.39/x
3. Step 3: Cross multiply
   2,938.01x = 4,402.89 × 2,112.39
4. Step 4: Simplify right side
   2,938.01x = 9,300,620.81
5. Step 5: Solve for x
   x = 9,300,620.81/2,938.01
6. Step 6: Final answer
   x = 3,165.62