Finding the Fourth Proportional to 1,887.88, 2,826.78 and 1,107.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,887.88 : 2,826.78 = 1,107.24 : x
2. Step 2: Convert to fraction form
   1,887.88/2,826.78 = 1,107.24/x
3. Step 3: Cross multiply
   1,887.88x = 2,826.78 × 1,107.24
4. Step 4: Simplify right side
   1,887.88x = 3,129,923.89
5. Step 5: Solve for x
   x = 3,129,923.89/1,887.88
6. Step 6: Final answer
   x = 1,657.90