Finding the Fourth Proportional to 3,172.35, 4,758.23 and 1,092.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,172.35 : 4,758.23 = 1,092.15 : x
2. Step 2: Convert to fraction form
   3,172.35/4,758.23 = 1,092.15/x
3. Step 3: Cross multiply
   3,172.35x = 4,758.23 × 1,092.15
4. Step 4: Simplify right side
   3,172.35x = 5,196,695.43
5. Step 5: Solve for x
   x = 5,196,695.43/3,172.35
6. Step 6: Final answer
   x = 1,638.12