Finding the Fourth Proportional to 1,101.18, 1,519.61 and 681.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.18 : 1,519.61 = 681.42 : x
2. Step 2: Convert to fraction form
   1,101.18/1,519.61 = 681.42/x
3. Step 3: Cross multiply
   1,101.18x = 1,519.61 × 681.42
4. Step 4: Simplify right side
   1,101.18x = 1,035,498.77
5. Step 5: Solve for x
   x = 1,035,498.77/1,101.18
6. Step 6: Final answer
   x = 940.35