Finding the Fourth Proportional to 1,159.97, 1,600.86 and 662.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,159.97 : 1,600.86 = 662.61 : x
2. Step 2: Convert to fraction form
   1,159.97/1,600.86 = 662.61/x
3. Step 3: Cross multiply
   1,159.97x = 1,600.86 × 662.61
4. Step 4: Simplify right side
   1,159.97x = 1,060,740.83
5. Step 5: Solve for x
   x = 1,060,740.83/1,159.97
6. Step 6: Final answer
   x = 914.45