Finding the Fourth Proportional to 1,119.86, 1,678.72 and 599.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,119.86 : 1,678.72 = 599.53 : x
2. Step 2: Convert to fraction form
   1,119.86/1,678.72 = 599.53/x
3. Step 3: Cross multiply
   1,119.86x = 1,678.72 × 599.53
4. Step 4: Simplify right side
   1,119.86x = 1,006,443.00
5. Step 5: Solve for x
   x = 1,006,443.00/1,119.86
6. Step 6: Final answer
   x = 898.72