Finding the Fourth Proportional to 1,582.52, 2,375.45 and 889.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,582.52 : 2,375.45 = 889.78 : x
2. Step 2: Convert to fraction form
   1,582.52/2,375.45 = 889.78/x
3. Step 3: Cross multiply
   1,582.52x = 2,375.45 × 889.78
4. Step 4: Simplify right side
   1,582.52x = 2,113,627.90
5. Step 5: Solve for x
   x = 2,113,627.90/1,582.52
6. Step 6: Final answer
   x = 1,335.61