Finding the Fourth Proportional to 1,002.29, 1,382.63 and 670.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.29 : 1,382.63 = 670.73 : x
2. Step 2: Convert to fraction form
   1,002.29/1,382.63 = 670.73/x
3. Step 3: Cross multiply
   1,002.29x = 1,382.63 × 670.73
4. Step 4: Simplify right side
   1,002.29x = 927,361.15
5. Step 5: Solve for x
   x = 927,361.15/1,002.29
6. Step 6: Final answer
   x = 925.25