Finding the Fourth Proportional to 1,039.86, 1,559.59 and 382.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.86 : 1,559.59 = 382.14 : x
2. Step 2: Convert to fraction form
   1,039.86/1,559.59 = 382.14/x
3. Step 3: Cross multiply
   1,039.86x = 1,559.59 × 382.14
4. Step 4: Simplify right side
   1,039.86x = 595,981.72
5. Step 5: Solve for x
   x = 595,981.72/1,039.86
6. Step 6: Final answer
   x = 573.14