Finding the Fourth Proportional to 1,578.50, 2,367.72 and 591.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578.50 : 2,367.72 = 591.27 : x
2. Step 2: Convert to fraction form
   1,578.50/2,367.72 = 591.27/x
3. Step 3: Cross multiply
   1,578.50x = 2,367.72 × 591.27
4. Step 4: Simplify right side
   1,578.50x = 1,399,961.80
5. Step 5: Solve for x
   x = 1,399,961.80/1,578.50
6. Step 6: Final answer
   x = 886.90