Finding the Fourth Proportional to 2,111.36, 3,151.69 and 1,938.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.36 : 3,151.69 = 1,938.02 : x
2. Step 2: Convert to fraction form
   2,111.36/3,151.69 = 1,938.02/x
3. Step 3: Cross multiply
   2,111.36x = 3,151.69 × 1,938.02
4. Step 4: Simplify right side
   2,111.36x = 6,108,017.65
5. Step 5: Solve for x
   x = 6,108,017.65/2,111.36
6. Step 6: Final answer
   x = 2,892.94