Finding the Fourth Proportional to 1,093.72, 1,641.42 and 573.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.72 : 1,641.42 = 573.84 : x
2. Step 2: Convert to fraction form
   1,093.72/1,641.42 = 573.84/x
3. Step 3: Cross multiply
   1,093.72x = 1,641.42 × 573.84
4. Step 4: Simplify right side
   1,093.72x = 941,912.45
5. Step 5: Solve for x
   x = 941,912.45/1,093.72
6. Step 6: Final answer
   x = 861.20