Finding the Fourth Proportional to 1,947.56, 2,686.30 and 1,161

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.56 : 2,686.30 = 1,161 : x
2. Step 2: Convert to fraction form
   1,947.56/2,686.30 = 1,161/x
3. Step 3: Cross multiply
   1,947.56x = 2,686.30 × 1,161
4. Step 4: Simplify right side
   1,947.56x = 3,118,794.30
5. Step 5: Solve for x
   x = 3,118,794.30/1,947.56
6. Step 6: Final answer
   x = 1,601.39