Finding the Fourth Proportional to 1,078.53, 1,618.03 and 591.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.53 : 1,618.03 = 591.33 : x
2. Step 2: Convert to fraction form
   1,078.53/1,618.03 = 591.33/x
3. Step 3: Cross multiply
   1,078.53x = 1,618.03 × 591.33
4. Step 4: Simplify right side
   1,078.53x = 956,787.11
5. Step 5: Solve for x
   x = 956,787.11/1,078.53
6. Step 6: Final answer
   x = 887.12