Finding the Fourth Proportional to 2,153.94, 3,230.18 and 692.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.94 : 3,230.18 = 692.72 : x
2. Step 2: Convert to fraction form
   2,153.94/3,230.18 = 692.72/x
3. Step 3: Cross multiply
   2,153.94x = 3,230.18 × 692.72
4. Step 4: Simplify right side
   2,153.94x = 2,237,610.29
5. Step 5: Solve for x
   x = 2,237,610.29/2,153.94
6. Step 6: Final answer
   x = 1,038.85