Finding the Fourth Proportional to 1,665.88, 2,498.50 and 692.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.88 : 2,498.50 = 692.07 : x
2. Step 2: Convert to fraction form
   1,665.88/2,498.50 = 692.07/x
3. Step 3: Cross multiply
   1,665.88x = 2,498.50 × 692.07
4. Step 4: Simplify right side
   1,665.88x = 1,729,136.90
5. Step 5: Solve for x
   x = 1,729,136.90/1,665.88
6. Step 6: Final answer
   x = 1,037.97