Finding the Fourth Proportional to 1,906.96, 2,631.36 and 1,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.96 : 2,631.36 = 1,120.72 : x
2. Step 2: Convert to fraction form
   1,906.96/2,631.36 = 1,120.72/x
3. Step 3: Cross multiply
   1,906.96x = 2,631.36 × 1,120.72
4. Step 4: Simplify right side
   1,906.96x = 2,949,017.78
5. Step 5: Solve for x
   x = 2,949,017.78/1,906.96
6. Step 6: Final answer
   x = 1,546.45