Finding the Fourth Proportional to 1,767.50, 2,651.59 and 672.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.50 : 2,651.59 = 672.63 : x
2. Step 2: Convert to fraction form
   1,767.50/2,651.59 = 672.63/x
3. Step 3: Cross multiply
   1,767.50x = 2,651.59 × 672.63
4. Step 4: Simplify right side
   1,767.50x = 1,783,538.98
5. Step 5: Solve for x
   x = 1,783,538.98/1,767.50
6. Step 6: Final answer
   x = 1,009.07