Finding the Fourth Proportional to 2,189.10, 3,020.48 and 1,433.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.10 : 3,020.48 = 1,433.98 : x
2. Step 2: Convert to fraction form
   2,189.10/3,020.48 = 1,433.98/x
3. Step 3: Cross multiply
   2,189.10x = 3,020.48 × 1,433.98
4. Step 4: Simplify right side
   2,189.10x = 4,331,307.91
5. Step 5: Solve for x
   x = 4,331,307.91/2,189.10
6. Step 6: Final answer
   x = 1,978.58