Finding the Fourth Proportional to 1,666.62, 2,498.45 and 692.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.62 : 2,498.45 = 692.10 : x
2. Step 2: Convert to fraction form
   1,666.62/2,498.45 = 692.10/x
3. Step 3: Cross multiply
   1,666.62x = 2,498.45 × 692.10
4. Step 4: Simplify right side
   1,666.62x = 1,729,173.78
5. Step 5: Solve for x
   x = 1,729,173.78/1,666.62
6. Step 6: Final answer
   x = 1,037.53