Finding the Fourth Proportional to 1,101.76, 1,518.86 and 681.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.76 : 1,518.86 = 681.86 : x
2. Step 2: Convert to fraction form
   1,101.76/1,518.86 = 681.86/x
3. Step 3: Cross multiply
   1,101.76x = 1,518.86 × 681.86
4. Step 4: Simplify right side
   1,101.76x = 1,035,649.88
5. Step 5: Solve for x
   x = 1,035,649.88/1,101.76
6. Step 6: Final answer
   x = 940.00