Finding the Fourth Proportional to 2,109.38, 2,910.94 and 1,177.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.38 : 2,910.94 = 1,177.88 : x
2. Step 2: Convert to fraction form
   2,109.38/2,910.94 = 1,177.88/x
3. Step 3: Cross multiply
   2,109.38x = 2,910.94 × 1,177.88
4. Step 4: Simplify right side
   2,109.38x = 3,428,720.51
5. Step 5: Solve for x
   x = 3,428,720.51/2,109.38
6. Step 6: Final answer
   x = 1,625.47