Finding the Fourth Proportional to 2,074.07, 2,861.39 and 1,189.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.07 : 2,861.39 = 1,189.69 : x
2. Step 2: Convert to fraction form
   2,074.07/2,861.39 = 1,189.69/x
3. Step 3: Cross multiply
   2,074.07x = 2,861.39 × 1,189.69
4. Step 4: Simplify right side
   2,074.07x = 3,404,162.89
5. Step 5: Solve for x
   x = 3,404,162.89/2,074.07
6. Step 6: Final answer
   x = 1,641.29