Finding the Fourth Proportional to 1,145.25, 1,580.04 and 702.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.25 : 1,580.04 = 702.69 : x
2. Step 2: Convert to fraction form
   1,145.25/1,580.04 = 702.69/x
3. Step 3: Cross multiply
   1,145.25x = 1,580.04 × 702.69
4. Step 4: Simplify right side
   1,145.25x = 1,110,278.31
5. Step 5: Solve for x
   x = 1,110,278.31/1,145.25
6. Step 6: Final answer
   x = 969.46