Finding the Fourth Proportional to 1,091.34, 1,636.53 and 1,036.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.34 : 1,636.53 = 1,036.62 : x
2. Step 2: Convert to fraction form
   1,091.34/1,636.53 = 1,036.62/x
3. Step 3: Cross multiply
   1,091.34x = 1,636.53 × 1,036.62
4. Step 4: Simplify right side
   1,091.34x = 1,696,459.73
5. Step 5: Solve for x
   x = 1,696,459.73/1,091.34
6. Step 6: Final answer
   x = 1,554.47