Finding the Fourth Proportional to 1,092.72, 1,637.80 and 897.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.72 : 1,637.80 = 897.92 : x
2. Step 2: Convert to fraction form
   1,092.72/1,637.80 = 897.92/x
3. Step 3: Cross multiply
   1,092.72x = 1,637.80 × 897.92
4. Step 4: Simplify right side
   1,092.72x = 1,470,613.38
5. Step 5: Solve for x
   x = 1,470,613.38/1,092.72
6. Step 6: Final answer
   x = 1,345.83