Finding the Fourth Proportional to 1,514.34, 2,091.15 and 991.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.34 : 2,091.15 = 991.62 : x
2. Step 2: Convert to fraction form
   1,514.34/2,091.15 = 991.62/x
3. Step 3: Cross multiply
   1,514.34x = 2,091.15 × 991.62
4. Step 4: Simplify right side
   1,514.34x = 2,073,626.16
5. Step 5: Solve for x
   x = 2,073,626.16/1,514.34
6. Step 6: Final answer
   x = 1,369.33