Finding the Fourth Proportional to 1,189.68, 1,636.88 and 1,162.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189.68 : 1,636.88 = 1,162.06 : x
2. Step 2: Convert to fraction form
   1,189.68/1,636.88 = 1,162.06/x
3. Step 3: Cross multiply
   1,189.68x = 1,636.88 × 1,162.06
4. Step 4: Simplify right side
   1,189.68x = 1,902,152.77
5. Step 5: Solve for x
   x = 1,902,152.77/1,189.68
6. Step 6: Final answer
   x = 1,598.88