Finding the Fourth Proportional to 1,152.69, 1,592.05 and 839.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.69 : 1,592.05 = 839.37 : x
2. Step 2: Convert to fraction form
   1,152.69/1,592.05 = 839.37/x
3. Step 3: Cross multiply
   1,152.69x = 1,592.05 × 839.37
4. Step 4: Simplify right side
   1,152.69x = 1,336,311.05
5. Step 5: Solve for x
   x = 1,336,311.05/1,152.69
6. Step 6: Final answer
   x = 1,159.30