Finding the Fourth Proportional to 1,947.78, 2,687.18 and 1,162.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.78 : 2,687.18 = 1,162.08 : x
2. Step 2: Convert to fraction form
   1,947.78/2,687.18 = 1,162.08/x
3. Step 3: Cross multiply
   1,947.78x = 2,687.18 × 1,162.08
4. Step 4: Simplify right side
   1,947.78x = 3,122,712.32
5. Step 5: Solve for x
   x = 3,122,712.32/1,947.78
6. Step 6: Final answer
   x = 1,603.22