Finding the Fourth Proportional to 1,669.69, 2,506.18 and 792.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,669.69 : 2,506.18 = 792.79 : x
2. Step 2: Convert to fraction form
   1,669.69/2,506.18 = 792.79/x
3. Step 3: Cross multiply
   1,669.69x = 2,506.18 × 792.79
4. Step 4: Simplify right side
   1,669.69x = 1,986,866.57
5. Step 5: Solve for x
   x = 1,986,866.57/1,669.69
6. Step 6: Final answer
   x = 1,189.96