Finding the Fourth Proportional to 2,111.36, 3,167.02 and 1,012.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.36 : 3,167.02 = 1,012.40 : x
2. Step 2: Convert to fraction form
   2,111.36/3,167.02 = 1,012.40/x
3. Step 3: Cross multiply
   2,111.36x = 3,167.02 × 1,012.40
4. Step 4: Simplify right side
   2,111.36x = 3,206,291.05
5. Step 5: Solve for x
   x = 3,206,291.05/2,111.36
6. Step 6: Final answer
   x = 1,518.59