Finding the Fourth Proportional to 2,111.56, 2,914.04 and 1,167.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.56 : 2,914.04 = 1,167.40 : x
2. Step 2: Convert to fraction form
   2,111.56/2,914.04 = 1,167.40/x
3. Step 3: Cross multiply
   2,111.56x = 2,914.04 × 1,167.40
4. Step 4: Simplify right side
   2,111.56x = 3,401,850.30
5. Step 5: Solve for x
   x = 3,401,850.30/2,111.56
6. Step 6: Final answer
   x = 1,611.06