Finding the Fourth Proportional to 1,680.65, 2,523.71 and 1,035.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.65 : 2,523.71 = 1,035.48 : x
2. Step 2: Convert to fraction form
   1,680.65/2,523.71 = 1,035.48/x
3. Step 3: Cross multiply
   1,680.65x = 2,523.71 × 1,035.48
4. Step 4: Simplify right side
   1,680.65x = 2,613,257.46
5. Step 5: Solve for x
   x = 2,613,257.46/1,680.65
6. Step 6: Final answer
   x = 1,554.91