Finding the Fourth Proportional to 1,932.28, 2,665.18 and 1,186.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,932.28 : 2,665.18 = 1,186.60 : x
2. Step 2: Convert to fraction form
   1,932.28/2,665.18 = 1,186.60/x
3. Step 3: Cross multiply
   1,932.28x = 2,665.18 × 1,186.60
4. Step 4: Simplify right side
   1,932.28x = 3,162,502.59
5. Step 5: Solve for x
   x = 3,162,502.59/1,932.28
6. Step 6: Final answer
   x = 1,636.67