Finding the Fourth Proportional to 2,111.55, 2,913.95 and 1,167.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.55 : 2,913.95 = 1,167.33 : x
2. Step 2: Convert to fraction form
   2,111.55/2,913.95 = 1,167.33/x
3. Step 3: Cross multiply
   2,111.55x = 2,913.95 × 1,167.33
4. Step 4: Simplify right side
   2,111.55x = 3,401,535.42
5. Step 5: Solve for x
   x = 3,401,535.42/2,111.55
6. Step 6: Final answer
   x = 1,610.92