Finding the Fourth Proportional to 1,292.29, 1,783.30 and 702.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,292.29 : 1,783.30 = 702.82 : x
2. Step 2: Convert to fraction form
   1,292.29/1,783.30 = 702.82/x
3. Step 3: Cross multiply
   1,292.29x = 1,783.30 × 702.82
4. Step 4: Simplify right side
   1,292.29x = 1,253,342.89
5. Step 5: Solve for x
   x = 1,253,342.89/1,292.29
6. Step 6: Final answer
   x = 969.86