Finding the Fourth Proportional to 1,680.32, 2,318.94 and 1,017.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.32 : 2,318.94 = 1,017.34 : x
2. Step 2: Convert to fraction form
   1,680.32/2,318.94 = 1,017.34/x
3. Step 3: Cross multiply
   1,680.32x = 2,318.94 × 1,017.34
4. Step 4: Simplify right side
   1,680.32x = 2,359,150.42
5. Step 5: Solve for x
   x = 2,359,150.42/1,680.32
6. Step 6: Final answer
   x = 1,403.99