Finding the Fourth Proportional to 1,961.67, 2,947.31 and 1,259.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.67 : 2,947.31 = 1,259.18 : x
2. Step 2: Convert to fraction form
   1,961.67/2,947.31 = 1,259.18/x
3. Step 3: Cross multiply
   1,961.67x = 2,947.31 × 1,259.18
4. Step 4: Simplify right side
   1,961.67x = 3,711,198.03
5. Step 5: Solve for x
   x = 3,711,198.03/1,961.67
6. Step 6: Final answer
   x = 1,891.86