Finding the Fourth Proportional to 1,862.69, 2,789.78 and 889.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,862.69 : 2,789.78 = 889.47 : x
2. Step 2: Convert to fraction form
   1,862.69/2,789.78 = 889.47/x
3. Step 3: Cross multiply
   1,862.69x = 2,789.78 × 889.47
4. Step 4: Simplify right side
   1,862.69x = 2,481,430.37
5. Step 5: Solve for x
   x = 2,481,430.37/1,862.69
6. Step 6: Final answer
   x = 1,332.18