Finding the Fourth Proportional to 1,680.89, 2,518.56 and 1,022.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.89 : 2,518.56 = 1,022.94 : x
2. Step 2: Convert to fraction form
   1,680.89/2,518.56 = 1,022.94/x
3. Step 3: Cross multiply
   1,680.89x = 2,518.56 × 1,022.94
4. Step 4: Simplify right side
   1,680.89x = 2,576,335.77
5. Step 5: Solve for x
   x = 2,576,335.77/1,680.89
6. Step 6: Final answer
   x = 1,532.73