Finding the Fourth Proportional to 1,251.98, 1,727.72 and 692.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.98 : 1,727.72 = 692.54 : x
2. Step 2: Convert to fraction form
   1,251.98/1,727.72 = 692.54/x
3. Step 3: Cross multiply
   1,251.98x = 1,727.72 × 692.54
4. Step 4: Simplify right side
   1,251.98x = 1,196,515.21
5. Step 5: Solve for x
   x = 1,196,515.21/1,251.98
6. Step 6: Final answer
   x = 955.70