Finding the Fourth Proportional to 1,152.37, 1,590.52 and 680.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.37 : 1,590.52 = 680.09 : x
2. Step 2: Convert to fraction form
   1,152.37/1,590.52 = 680.09/x
3. Step 3: Cross multiply
   1,152.37x = 1,590.52 × 680.09
4. Step 4: Simplify right side
   1,152.37x = 1,081,696.75
5. Step 5: Solve for x
   x = 1,081,696.75/1,152.37
6. Step 6: Final answer
   x = 938.67