Finding the Fourth Proportional to 2,573.72, 3,861.36 and 1,092.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.72 : 3,861.36 = 1,092.18 : x
2. Step 2: Convert to fraction form
   2,573.72/3,861.36 = 1,092.18/x
3. Step 3: Cross multiply
   2,573.72x = 3,861.36 × 1,092.18
4. Step 4: Simplify right side
   2,573.72x = 4,217,300.16
5. Step 5: Solve for x
   x = 4,217,300.16/2,573.72
6. Step 6: Final answer
   x = 1,638.60