Finding the Fourth Proportional to 1,665.56, 2,498.52 and 692.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.56 : 2,498.52 = 692.48 : x
2. Step 2: Convert to fraction form
   1,665.56/2,498.52 = 692.48/x
3. Step 3: Cross multiply
   1,665.56x = 2,498.52 × 692.48
4. Step 4: Simplify right side
   1,665.56x = 1,730,175.13
5. Step 5: Solve for x
   x = 1,730,175.13/1,665.56
6. Step 6: Final answer
   x = 1,038.79