Finding the Fourth Proportional to 1,661.22, 2,288.58 and 1,162.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.22 : 2,288.58 = 1,162.98 : x
2. Step 2: Convert to fraction form
   1,661.22/2,288.58 = 1,162.98/x
3. Step 3: Cross multiply
   1,661.22x = 2,288.58 × 1,162.98
4. Step 4: Simplify right side
   1,661.22x = 2,661,572.77
5. Step 5: Solve for x
   x = 2,661,572.77/1,661.22
6. Step 6: Final answer
   x = 1,602.18