Finding the Fourth Proportional to 1,518.69, 2,096.10 and 987.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.69 : 2,096.10 = 987.57 : x
2. Step 2: Convert to fraction form
   1,518.69/2,096.10 = 987.57/x
3. Step 3: Cross multiply
   1,518.69x = 2,096.10 × 987.57
4. Step 4: Simplify right side
   1,518.69x = 2,070,045.48
5. Step 5: Solve for x
   x = 2,070,045.48/1,518.69
6. Step 6: Final answer
   x = 1,363.05