Finding the Fourth Proportional to 1,993.69, 2,750.79 and 1,207.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993.69 : 2,750.79 = 1,207.59 : x
2. Step 2: Convert to fraction form
   1,993.69/2,750.79 = 1,207.59/x
3. Step 3: Cross multiply
   1,993.69x = 2,750.79 × 1,207.59
4. Step 4: Simplify right side
   1,993.69x = 3,321,826.50
5. Step 5: Solve for x
   x = 3,321,826.50/1,993.69
6. Step 6: Final answer
   x = 1,666.17