Finding the Fourth Proportional to 2,189.89, 3,278.74 and 1,703.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.89 : 3,278.74 = 1,703.89 : x
2. Step 2: Convert to fraction form
   2,189.89/3,278.74 = 1,703.89/x
3. Step 3: Cross multiply
   2,189.89x = 3,278.74 × 1,703.89
4. Step 4: Simplify right side
   2,189.89x = 5,586,603.78
5. Step 5: Solve for x
   x = 5,586,603.78/2,189.89
6. Step 6: Final answer
   x = 2,551.09