Finding the Fourth Proportional to 1,093.98, 1,639.38 and 572.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.98 : 1,639.38 = 572.82 : x
2. Step 2: Convert to fraction form
   1,093.98/1,639.38 = 572.82/x
3. Step 3: Cross multiply
   1,093.98x = 1,639.38 × 572.82
4. Step 4: Simplify right side
   1,093.98x = 939,069.65
5. Step 5: Solve for x
   x = 939,069.65/1,093.98
6. Step 6: Final answer
   x = 858.40