Finding the Fourth Proportional to 1,095.72, 1,642.72 and 547.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.72 : 1,642.72 = 547.62 : x
2. Step 2: Convert to fraction form
   1,095.72/1,642.72 = 547.62/x
3. Step 3: Cross multiply
   1,095.72x = 1,642.72 × 547.62
4. Step 4: Simplify right side
   1,095.72x = 899,586.33
5. Step 5: Solve for x
   x = 899,586.33/1,095.72
6. Step 6: Final answer
   x = 821.00