Finding the Fourth Proportional to 1,002.93, 1,382.77 and 648.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.93 : 1,382.77 = 648.25 : x
2. Step 2: Convert to fraction form
   1,002.93/1,382.77 = 648.25/x
3. Step 3: Cross multiply
   1,002.93x = 1,382.77 × 648.25
4. Step 4: Simplify right side
   1,002.93x = 896,380.65
5. Step 5: Solve for x
   x = 896,380.65/1,002.93
6. Step 6: Final answer
   x = 893.76