Finding the Fourth Proportional to 2,120.69, 2,926.55 and 1,176.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.69 : 2,926.55 = 1,176.45 : x
2. Step 2: Convert to fraction form
   2,120.69/2,926.55 = 1,176.45/x
3. Step 3: Cross multiply
   2,120.69x = 2,926.55 × 1,176.45
4. Step 4: Simplify right side
   2,120.69x = 3,442,942.69
5. Step 5: Solve for x
   x = 3,442,942.69/2,120.69
6. Step 6: Final answer
   x = 1,623.50