Finding the Fourth Proportional to 1,679.73, 2,317.98 and 981.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.73 : 2,317.98 = 981.10 : x
2. Step 2: Convert to fraction form
   1,679.73/2,317.98 = 981.10/x
3. Step 3: Cross multiply
   1,679.73x = 2,317.98 × 981.10
4. Step 4: Simplify right side
   1,679.73x = 2,274,170.18
5. Step 5: Solve for x
   x = 2,274,170.18/1,679.73
6. Step 6: Final answer
   x = 1,353.89