Finding the Fourth Proportional to 1,583.31, 2,377.22 and 889.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,583.31 : 2,377.22 = 889.86 : x
2. Step 2: Convert to fraction form
   1,583.31/2,377.22 = 889.86/x
3. Step 3: Cross multiply
   1,583.31x = 2,377.22 × 889.86
4. Step 4: Simplify right side
   1,583.31x = 2,115,388.54
5. Step 5: Solve for x
   x = 2,115,388.54/1,583.31
6. Step 6: Final answer
   x = 1,336.05