Finding the Fourth Proportional to 1,617.72, 2,427.06 and 692.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.72 : 2,427.06 = 692.82 : x
2. Step 2: Convert to fraction form
   1,617.72/2,427.06 = 692.82/x
3. Step 3: Cross multiply
   1,617.72x = 2,427.06 × 692.82
4. Step 4: Simplify right side
   1,617.72x = 1,681,515.71
5. Step 5: Solve for x
   x = 1,681,515.71/1,617.72
6. Step 6: Final answer
   x = 1,039.44