Finding the Fourth Proportional to 1,789.15, 2,469.20 and 1,043.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.15 : 2,469.20 = 1,043.05 : x
2. Step 2: Convert to fraction form
   1,789.15/2,469.20 = 1,043.05/x
3. Step 3: Cross multiply
   1,789.15x = 2,469.20 × 1,043.05
4. Step 4: Simplify right side
   1,789.15x = 2,575,499.06
5. Step 5: Solve for x
   x = 2,575,499.06/1,789.15
6. Step 6: Final answer
   x = 1,439.51