Finding the Fourth Proportional to 2,101.39, 2,899.89 and 1,169.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.39 : 2,899.89 = 1,169.89 : x
2. Step 2: Convert to fraction form
   2,101.39/2,899.89 = 1,169.89/x
3. Step 3: Cross multiply
   2,101.39x = 2,899.89 × 1,169.89
4. Step 4: Simplify right side
   2,101.39x = 3,392,552.31
5. Step 5: Solve for x
   x = 3,392,552.31/2,101.39
6. Step 6: Final answer
   x = 1,614.43