Finding the Fourth Proportional to 1,156.89, 1,596.54 and 659.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.89 : 1,596.54 = 659.61 : x
2. Step 2: Convert to fraction form
   1,156.89/1,596.54 = 659.61/x
3. Step 3: Cross multiply
   1,156.89x = 1,596.54 × 659.61
4. Step 4: Simplify right side
   1,156.89x = 1,053,093.75
5. Step 5: Solve for x
   x = 1,053,093.75/1,156.89
6. Step 6: Final answer
   x = 910.28