Finding the Fourth Proportional to 2,111.11, 2,913.48 and 1,167.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.11 : 2,913.48 = 1,167.07 : x
2. Step 2: Convert to fraction form
   2,111.11/2,913.48 = 1,167.07/x
3. Step 3: Cross multiply
   2,111.11x = 2,913.48 × 1,167.07
4. Step 4: Simplify right side
   2,111.11x = 3,400,235.10
5. Step 5: Solve for x
   x = 3,400,235.10/2,111.11
6. Step 6: Final answer
   x = 1,610.64