Finding the Fourth Proportional to 2,628.76, 3,940.68 and 1,167.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.76 : 3,940.68 = 1,167.10 : x
2. Step 2: Convert to fraction form
   2,628.76/3,940.68 = 1,167.10/x
3. Step 3: Cross multiply
   2,628.76x = 3,940.68 × 1,167.10
4. Step 4: Simplify right side
   2,628.76x = 4,599,167.63
5. Step 5: Solve for x
   x = 4,599,167.63/2,628.76
6. Step 6: Final answer
   x = 1,749.56