Finding the Fourth Proportional to 1,561.27, 2,154.54 and 932.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.27 : 2,154.54 = 932.21 : x
2. Step 2: Convert to fraction form
   1,561.27/2,154.54 = 932.21/x
3. Step 3: Cross multiply
   1,561.27x = 2,154.54 × 932.21
4. Step 4: Simplify right side
   1,561.27x = 2,008,483.73
5. Step 5: Solve for x
   x = 2,008,483.73/1,561.27
6. Step 6: Final answer
   x = 1,286.44