Finding the Fourth Proportional to 1,981.89, 2,735.01 and 1,284.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.89 : 2,735.01 = 1,284.48 : x
2. Step 2: Convert to fraction form
   1,981.89/2,735.01 = 1,284.48/x
3. Step 3: Cross multiply
   1,981.89x = 2,735.01 × 1,284.48
4. Step 4: Simplify right side
   1,981.89x = 3,513,065.64
5. Step 5: Solve for x
   x = 3,513,065.64/1,981.89
6. Step 6: Final answer
   x = 1,772.58