Finding the Fourth Proportional to 1,288.37, 1,933.37 and 672.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.37 : 1,933.37 = 672.51 : x
2. Step 2: Convert to fraction form
   1,288.37/1,933.37 = 672.51/x
3. Step 3: Cross multiply
   1,288.37x = 1,933.37 × 672.51
4. Step 4: Simplify right side
   1,288.37x = 1,300,210.66
5. Step 5: Solve for x
   x = 1,300,210.66/1,288.37
6. Step 6: Final answer
   x = 1,009.19