Finding the Fourth Proportional to 1,068.21, 1,601.33 and 547.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.21 : 1,601.33 = 547.06 : x
2. Step 2: Convert to fraction form
   1,068.21/1,601.33 = 547.06/x
3. Step 3: Cross multiply
   1,068.21x = 1,601.33 × 547.06
4. Step 4: Simplify right side
   1,068.21x = 876,025.86
5. Step 5: Solve for x
   x = 876,025.86/1,068.21
6. Step 6: Final answer
   x = 820.09