Finding the Fourth Proportional to 2,035.89, 2,809.26 and 1,288.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,035.89 : 2,809.26 = 1,288.53 : x
2. Step 2: Convert to fraction form
   2,035.89/2,809.26 = 1,288.53/x
3. Step 3: Cross multiply
   2,035.89x = 2,809.26 × 1,288.53
4. Step 4: Simplify right side
   2,035.89x = 3,619,815.79
5. Step 5: Solve for x
   x = 3,619,815.79/2,035.89
6. Step 6: Final answer
   x = 1,778.00