Finding the Fourth Proportional to 1,101.35, 1,520.37 and 681.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.35 : 1,520.37 = 681.95 : x
2. Step 2: Convert to fraction form
   1,101.35/1,520.37 = 681.95/x
3. Step 3: Cross multiply
   1,101.35x = 1,520.37 × 681.95
4. Step 4: Simplify right side
   1,101.35x = 1,036,820.12
5. Step 5: Solve for x
   x = 1,036,820.12/1,101.35
6. Step 6: Final answer
   x = 941.41