Finding the Fourth Proportional to 2,101.69, 2,900.34 and 1,170.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.69 : 2,900.34 = 1,170.19 : x
2. Step 2: Convert to fraction form
   2,101.69/2,900.34 = 1,170.19/x
3. Step 3: Cross multiply
   2,101.69x = 2,900.34 × 1,170.19
4. Step 4: Simplify right side
   2,101.69x = 3,393,948.86
5. Step 5: Solve for x
   x = 3,393,948.86/2,101.69
6. Step 6: Final answer
   x = 1,614.87