Finding the Fourth Proportional to 1,250.50, 1,725.69 and 698.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.50 : 1,725.69 = 698.50 : x
2. Step 2: Convert to fraction form
   1,250.50/1,725.69 = 698.50/x
3. Step 3: Cross multiply
   1,250.50x = 1,725.69 × 698.50
4. Step 4: Simplify right side
   1,250.50x = 1,205,394.47
5. Step 5: Solve for x
   x = 1,205,394.47/1,250.50
6. Step 6: Final answer
   x = 963.93