Finding the Fourth Proportional to 1,517.76, 2,094.56 and 920.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,517.76 : 2,094.56 = 920.15 : x
2. Step 2: Convert to fraction form
   1,517.76/2,094.56 = 920.15/x
3. Step 3: Cross multiply
   1,517.76x = 2,094.56 × 920.15
4. Step 4: Simplify right side
   1,517.76x = 1,927,309.38
5. Step 5: Solve for x
   x = 1,927,309.38/1,517.76
6. Step 6: Final answer
   x = 1,269.84