Finding the Fourth Proportional to 1,905.89, 2,629.80 and 1,120.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905.89 : 2,629.80 = 1,120.08 : x
2. Step 2: Convert to fraction form
   1,905.89/2,629.80 = 1,120.08/x
3. Step 3: Cross multiply
   1,905.89x = 2,629.80 × 1,120.08
4. Step 4: Simplify right side
   1,905.89x = 2,945,600.45
5. Step 5: Solve for x
   x = 2,945,600.45/1,905.89
6. Step 6: Final answer
   x = 1,545.53