Finding the Fourth Proportional to 1,764.59, 2,645.33 and 668.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,764.59 : 2,645.33 = 668.15 : x
2. Step 2: Convert to fraction form
   1,764.59/2,645.33 = 668.15/x
3. Step 3: Cross multiply
   1,764.59x = 2,645.33 × 668.15
4. Step 4: Simplify right side
   1,764.59x = 1,767,473.90
5. Step 5: Solve for x
   x = 1,767,473.90/1,764.59
6. Step 6: Final answer
   x = 1,001.64