Finding the Fourth Proportional to 2,173.23, 3,259.83 and 692.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.23 : 3,259.83 = 692.61 : x
2. Step 2: Convert to fraction form
   2,173.23/3,259.83 = 692.61/x
3. Step 3: Cross multiply
   2,173.23x = 3,259.83 × 692.61
4. Step 4: Simplify right side
   2,173.23x = 2,257,790.86
5. Step 5: Solve for x
   x = 2,257,790.86/2,173.23
6. Step 6: Final answer
   x = 1,038.91