Finding the Fourth Proportional to 2,100.89, 2,899.20 and 1,169.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.89 : 2,899.20 = 1,169.39 : x
2. Step 2: Convert to fraction form
   2,100.89/2,899.20 = 1,169.39/x
3. Step 3: Cross multiply
   2,100.89x = 2,899.20 × 1,169.39
4. Step 4: Simplify right side
   2,100.89x = 3,390,295.49
5. Step 5: Solve for x
   x = 3,390,295.49/2,100.89
6. Step 6: Final answer
   x = 1,613.74